Observation of wrong-sign tri-muon events in 250 GeV muon-nucleon interactions
Identifieur interne : 002991 ( Istex/Corpus ); précédent : 002990; suivant : 002992Observation of wrong-sign tri-muon events in 250 GeV muon-nucleon interactions
Auteurs : J. J. Aubert ; G. Bassompierre ; K. H. Becks ; C. Best ; E. Böhm ; X. De Bouard ; F. W. Brasse ; C. Broll ; S. Brown ; J. Carr ; R. W. Clifft ; J. H. Cobb ; G. Coignet ; F. Combley ; J. M. Crespo ; G. D'Agostini ; P. F. Dalpiaz ; P. Dalpiaz ; W. D. Dau ; J. K. Davies ; Y. Déclais ; R. W. Dobinson ; U. Dosselli ; J. Drees ; A. Edwards ; M. Edwards ; J. Favier ; M. I. Ferrero ; W. Flauger ; E. Gabathuler ; R. Gamet ; J. Gayler ; V. Gerhardt ; P. Ghez ; C. Gössling ; P. Gregory ; J. Haas ; K. Hamacher ; P. Hayman ; M. Henckes ; V. Korbel ; U. Landgraf ; M. Leenen ; M. Maire ; L. Massonnet ; H. Minssieux ; W. Mohr ; H. E. Montgomery ; K. Moser ; R. P. Mount ; P. R. Norton ; J. Mcnicholas ; A. M. Osborne ; P. Payre ; C. Peroni ; H. Pessard ; U. Pietrzyk ; K. Rith ; M. Schneegans ; T. Sloan ; H. E. Stier ; W. Stockhausen ; J. M. Thénard ; J. C. Thompson ; L. Urban ; M. Villers ; H. Wahlen ; M. Whalley ; D. Williams ; W. S. C. Williams ; J. Williamson ; S. J. WimpennySource :
- Physics Letters B [ 0370-2693 ] ; 1981.
English descriptors
- KwdEn :
- Teeft :
Abstract
Abstract: Two trimuon events of the type μ+N→μ+μ+μ+X and one μ+N→μ+μ−μ−X have been observed in 250 GeV μ+ -iron interactions. The expected rate from the decay of hadrons (charm, π, K) is about one event. Other processes that may contribute are both beauty production and charm production with D0−D0 mixing. The data give upper limits of 12×10−36 cm2 for the cross section of beauty pair production by muons, and 20% for D0 ↔ D0 transitions due to mixing, both at 90% confidence level.
Url:
DOI: 10.1016/0370-2693(81)90655-9
Links to Exploration step
ISTEX:E021B7115757B8D209F80D51E62BB5261F18DAF0Le document en format XML
<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title>Observation of wrong-sign tri-muon events in 250 GeV muon-nucleon interactions</title><author><name sortKey="Aubert, J J" sort="Aubert, J J" uniqKey="Aubert J" first="J. J." last="Aubert">J. J. Aubert</name><affiliation><mods:affiliation>LAPP Annecy, France</mods:affiliation></affiliation><affiliation><mods:affiliation>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</mods:affiliation></affiliation></author><author><name sortKey="Bassompierre, G" sort="Bassompierre, G" uniqKey="Bassompierre G" first="G." last="Bassompierre">G. Bassompierre</name><affiliation><mods:affiliation>LAPP Annecy, France</mods:affiliation></affiliation></author><author><name sortKey="Becks, K H" sort="Becks, K H" uniqKey="Becks K" first="K. H." last="Becks">K. H. Becks</name><affiliation><mods:affiliation>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</mods:affiliation></affiliation></author><author><name sortKey="Best, C" sort="Best, C" uniqKey="Best C" first="C." last="Best">C. Best</name><affiliation><mods:affiliation>Rutherford, USA</mods:affiliation></affiliation></author><author><name sortKey="Bohm, E" sort="Bohm, E" uniqKey="Bohm E" first="E." last="Böhm">E. Böhm</name><affiliation><mods:affiliation>Kiel, Germany</mods:affiliation></affiliation></author><author><name sortKey="De Bouard, X" sort="De Bouard, X" uniqKey="De Bouard X" first="X." last="De Bouard">X. De Bouard</name><affiliation><mods:affiliation>LAPP Annecy, France</mods:affiliation></affiliation></author><author><name sortKey="Brasse, F W" sort="Brasse, F W" uniqKey="Brasse F" first="F. W." last="Brasse">F. W. Brasse</name><affiliation><mods:affiliation>DESY Hamburg, Germany</mods:affiliation></affiliation></author><author><name sortKey="Broll, C" sort="Broll, C" uniqKey="Broll C" first="C." last="Broll">C. Broll</name><affiliation><mods:affiliation>LAPP Annecy, France</mods:affiliation></affiliation></author><author><name sortKey="Brown, S" sort="Brown, S" uniqKey="Brown S" first="S." last="Brown">S. Brown</name><affiliation><mods:affiliation>Liverpool, Australia</mods:affiliation></affiliation></author><author><name sortKey="Carr, J" sort="Carr, J" uniqKey="Carr J" first="J." last="Carr">J. Carr</name><affiliation><mods:affiliation>Rutherford, USA</mods:affiliation></affiliation></author><author><name sortKey="Clifft, R W" sort="Clifft, R W" uniqKey="Clifft R" first="R. W." last="Clifft">R. W. Clifft</name><affiliation><mods:affiliation>Rutherford, USA</mods:affiliation></affiliation></author><author><name sortKey="Cobb, J H" sort="Cobb, J H" uniqKey="Cobb J" first="J. H." last="Cobb">J. H. Cobb</name><affiliation><mods:affiliation>Lancaster, UK</mods:affiliation></affiliation></author><author><name sortKey="Coignet, G" sort="Coignet, G" uniqKey="Coignet G" first="G." last="Coignet">G. Coignet</name><affiliation><mods:affiliation>LAPP Annecy, France</mods:affiliation></affiliation></author><author><name sortKey="Combley, F" sort="Combley, F" uniqKey="Combley F" first="F." last="Combley">F. Combley</name><affiliation><mods:affiliation>Sheffield, Australia</mods:affiliation></affiliation></author><author><name sortKey="Crespo, J M" sort="Crespo, J M" uniqKey="Crespo J" first="J. M." last="Crespo">J. M. Crespo</name><affiliation><mods:affiliation>LAPP Annecy, France</mods:affiliation></affiliation><affiliation><mods:affiliation>2 Now at Junta de Energia Nuclear, Madrid, Spain.</mods:affiliation></affiliation></author><author><name sortKey="D Agostini, G" sort="D Agostini, G" uniqKey="D Agostini G" first="G." last="D'Agostini">G. D'Agostini</name><affiliation><mods:affiliation>LAPP Annecy, France</mods:affiliation></affiliation></author><author><name sortKey="Dalpiaz, P F" sort="Dalpiaz, P F" uniqKey="Dalpiaz P" first="P. F." last="Dalpiaz">P. F. Dalpiaz</name><affiliation><mods:affiliation>Turin, Italy</mods:affiliation></affiliation></author><author><name sortKey="Dalpiaz, P" sort="Dalpiaz, P" uniqKey="Dalpiaz P" first="P." last="Dalpiaz">P. Dalpiaz</name><affiliation><mods:affiliation>Turin, Italy</mods:affiliation></affiliation></author><author><name sortKey="Dau, W D" sort="Dau, W D" uniqKey="Dau W" first="W. D." last="Dau">W. D. Dau</name><affiliation><mods:affiliation>Kiel, Germany</mods:affiliation></affiliation></author><author><name sortKey="Davies, J K" sort="Davies, J K" uniqKey="Davies J" first="J. K." last="Davies">J. K. Davies</name><affiliation><mods:affiliation>Oxford, USA</mods:affiliation></affiliation></author><author><name sortKey="Declais, Y" sort="Declais, Y" uniqKey="Declais Y" first="Y." last="Déclais">Y. Déclais</name><affiliation><mods:affiliation>LAPP Annecy, France</mods:affiliation></affiliation></author><author><name sortKey="Dobinson, R W" sort="Dobinson, R W" uniqKey="Dobinson R" first="R. W." last="Dobinson">R. W. Dobinson</name><affiliation><mods:affiliation>CERN, Switzerland</mods:affiliation></affiliation></author><author><name sortKey="Dosselli, U" sort="Dosselli, U" uniqKey="Dosselli U" first="U." last="Dosselli">U. Dosselli</name><affiliation><mods:affiliation>CERN, Switzerland</mods:affiliation></affiliation></author><author><name sortKey="Drees, J" sort="Drees, J" uniqKey="Drees J" first="J." last="Drees">J. Drees</name><affiliation><mods:affiliation>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</mods:affiliation></affiliation></author><author><name sortKey="Edwards, A" sort="Edwards, A" uniqKey="Edwards A" first="A." last="Edwards">A. Edwards</name><affiliation><mods:affiliation>CERN, Switzerland</mods:affiliation></affiliation></author><author><name sortKey="Edwards, M" sort="Edwards, M" uniqKey="Edwards M" first="M." last="Edwards">M. Edwards</name><affiliation><mods:affiliation>Rutherford, USA</mods:affiliation></affiliation></author><author><name sortKey="Favier, J" sort="Favier, J" uniqKey="Favier J" first="J." last="Favier">J. Favier</name><affiliation><mods:affiliation>LAPP Annecy, France</mods:affiliation></affiliation></author><author><name sortKey="Ferrero, M I" sort="Ferrero, M I" uniqKey="Ferrero M" first="M. I." last="Ferrero">M. I. Ferrero</name><affiliation><mods:affiliation>Turin, Italy</mods:affiliation></affiliation></author><author><name sortKey="Flauger, W" sort="Flauger, W" uniqKey="Flauger W" first="W." last="Flauger">W. Flauger</name><affiliation><mods:affiliation>DESY Hamburg, Germany</mods:affiliation></affiliation></author><author><name sortKey="Gabathuler, E" sort="Gabathuler, E" uniqKey="Gabathuler E" first="E." last="Gabathuler">E. Gabathuler</name><affiliation><mods:affiliation>CERN, Switzerland</mods:affiliation></affiliation></author><author><name sortKey="Gamet, R" sort="Gamet, R" uniqKey="Gamet R" first="R." last="Gamet">R. Gamet</name><affiliation><mods:affiliation>Liverpool, Australia</mods:affiliation></affiliation></author><author><name sortKey="Gayler, J" sort="Gayler, J" uniqKey="Gayler J" first="J." last="Gayler">J. Gayler</name><affiliation><mods:affiliation>DESY Hamburg, Germany</mods:affiliation></affiliation></author><author><name sortKey="Gerhardt, V" sort="Gerhardt, V" uniqKey="Gerhardt V" first="V." last="Gerhardt">V. Gerhardt</name><affiliation><mods:affiliation>DESY Hamburg, Germany</mods:affiliation></affiliation></author><author><name sortKey="Ghez, P" sort="Ghez, P" uniqKey="Ghez P" first="P." last="Ghez">P. Ghez</name><affiliation><mods:affiliation>LAPP Annecy, France</mods:affiliation></affiliation></author><author><name sortKey="Gossling, C" sort="Gossling, C" uniqKey="Gossling C" first="C." last="Gössling">C. Gössling</name><affiliation><mods:affiliation>DESY Hamburg, Germany</mods:affiliation></affiliation></author><author><name sortKey="Gregory, P" sort="Gregory, P" uniqKey="Gregory P" first="P." last="Gregory">P. Gregory</name><affiliation><mods:affiliation>CERN, Switzerland</mods:affiliation></affiliation><affiliation><mods:affiliation>3 Now at Imperial College, London, England.</mods:affiliation></affiliation></author><author><name sortKey="Haas, J" sort="Haas, J" uniqKey="Haas J" first="J." last="Haas">J. Haas</name><affiliation><mods:affiliation>CERN, Switzerland</mods:affiliation></affiliation></author><author><name sortKey="Hamacher, K" sort="Hamacher, K" uniqKey="Hamacher K" first="K." last="Hamacher">K. Hamacher</name><affiliation><mods:affiliation>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</mods:affiliation></affiliation></author><author><name sortKey="Hayman, P" sort="Hayman, P" uniqKey="Hayman P" first="P." last="Hayman">P. Hayman</name><affiliation><mods:affiliation>Liverpool, Australia</mods:affiliation></affiliation></author><author><name sortKey="Henckes, M" sort="Henckes, M" uniqKey="Henckes M" first="M." last="Henckes">M. Henckes</name><affiliation><mods:affiliation>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</mods:affiliation></affiliation></author><author><name sortKey="Korbel, V" sort="Korbel, V" uniqKey="Korbel V" first="V." last="Korbel">V. Korbel</name><affiliation><mods:affiliation>DESY Hamburg, Germany</mods:affiliation></affiliation></author><author><name sortKey="Landgraf, U" sort="Landgraf, U" uniqKey="Landgraf U" first="U." last="Landgraf">U. Landgraf</name><affiliation><mods:affiliation>Freiburg, Germany</mods:affiliation></affiliation></author><author><name sortKey="Leenen, M" sort="Leenen, M" uniqKey="Leenen M" first="M." last="Leenen">M. Leenen</name><affiliation><mods:affiliation>CERN, Switzerland</mods:affiliation></affiliation></author><author><name sortKey="Maire, M" sort="Maire, M" uniqKey="Maire M" first="M." last="Maire">M. Maire</name><affiliation><mods:affiliation>LAPP Annecy, France</mods:affiliation></affiliation></author><author><name sortKey="Massonnet, L" sort="Massonnet, L" uniqKey="Massonnet L" first="L." last="Massonnet">L. Massonnet</name><affiliation><mods:affiliation>LAPP Annecy, France</mods:affiliation></affiliation></author><author><name sortKey="Minssieux, H" sort="Minssieux, H" uniqKey="Minssieux H" first="H." last="Minssieux">H. Minssieux</name><affiliation><mods:affiliation>LAPP Annecy, France</mods:affiliation></affiliation></author><author><name sortKey="Mohr, W" sort="Mohr, W" uniqKey="Mohr W" first="W." last="Mohr">W. Mohr</name><affiliation><mods:affiliation>Freiburg, Germany</mods:affiliation></affiliation></author><author><name sortKey="Montgomery, H E" sort="Montgomery, H E" uniqKey="Montgomery H" first="H. E." last="Montgomery">H. E. Montgomery</name><affiliation><mods:affiliation>CERN, Switzerland</mods:affiliation></affiliation></author><author><name sortKey="Moser, K" sort="Moser, K" uniqKey="Moser K" first="K." last="Moser">K. Moser</name><affiliation><mods:affiliation>Freiburg, Germany</mods:affiliation></affiliation></author><author><name sortKey="Mount, R P" sort="Mount, R P" uniqKey="Mount R" first="R. P." last="Mount">R. P. Mount</name><affiliation><mods:affiliation>Oxford, USA</mods:affiliation></affiliation></author><author><name sortKey="Norton, P R" sort="Norton, P R" uniqKey="Norton P" first="P. R." last="Norton">P. R. Norton</name><affiliation><mods:affiliation>Rutherford, USA</mods:affiliation></affiliation></author><author><name sortKey="Mcnicholas, J" sort="Mcnicholas, J" uniqKey="Mcnicholas J" first="J." last="Mcnicholas">J. Mcnicholas</name><affiliation><mods:affiliation>Oxford, USA</mods:affiliation></affiliation></author><author><name sortKey="Osborne, A M" sort="Osborne, A M" uniqKey="Osborne A" first="A. M." last="Osborne">A. M. Osborne</name><affiliation><mods:affiliation>CERN, Switzerland</mods:affiliation></affiliation></author><author><name sortKey="Payre, P" sort="Payre, P" uniqKey="Payre P" first="P." last="Payre">P. Payre</name><affiliation><mods:affiliation>LAPP Annecy, France</mods:affiliation></affiliation></author><author><name sortKey="Peroni, C" sort="Peroni, C" uniqKey="Peroni C" first="C." last="Peroni">C. Peroni</name><affiliation><mods:affiliation>Turin, Italy</mods:affiliation></affiliation></author><author><name sortKey="Pessard, H" sort="Pessard, H" uniqKey="Pessard H" first="H." last="Pessard">H. Pessard</name><affiliation><mods:affiliation>LAPP Annecy, France</mods:affiliation></affiliation></author><author><name sortKey="Pietrzyk, U" sort="Pietrzyk, U" uniqKey="Pietrzyk U" first="U." last="Pietrzyk">U. Pietrzyk</name><affiliation><mods:affiliation>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</mods:affiliation></affiliation></author><author><name sortKey="Rith, K" sort="Rith, K" uniqKey="Rith K" first="K." last="Rith">K. Rith</name><affiliation><mods:affiliation>Freiburg, Germany</mods:affiliation></affiliation></author><author><name sortKey="Schneegans, M" sort="Schneegans, M" uniqKey="Schneegans M" first="M." last="Schneegans">M. Schneegans</name><affiliation><mods:affiliation>LAPP Annecy, France</mods:affiliation></affiliation></author><author><name sortKey="Sloan, T" sort="Sloan, T" uniqKey="Sloan T" first="T." last="Sloan">T. Sloan</name><affiliation><mods:affiliation>Lancaster, UK</mods:affiliation></affiliation></author><author><name sortKey="Stier, H E" sort="Stier, H E" uniqKey="Stier H" first="H. E." last="Stier">H. E. Stier</name><affiliation><mods:affiliation>Freiburg, Germany</mods:affiliation></affiliation></author><author><name sortKey="Stockhausen, W" sort="Stockhausen, W" uniqKey="Stockhausen W" first="W." last="Stockhausen">W. Stockhausen</name><affiliation><mods:affiliation>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</mods:affiliation></affiliation></author><author><name sortKey="Thenard, J M" sort="Thenard, J M" uniqKey="Thenard J" first="J. M." last="Thénard">J. M. Thénard</name><affiliation><mods:affiliation>LAPP Annecy, France</mods:affiliation></affiliation></author><author><name sortKey="Thompson, J C" sort="Thompson, J C" uniqKey="Thompson J" first="J. C." last="Thompson">J. C. Thompson</name><affiliation><mods:affiliation>Rutherford, USA</mods:affiliation></affiliation></author><author><name sortKey="Urban, L" sort="Urban, L" uniqKey="Urban L" first="L." last="Urban">L. Urban</name><affiliation><mods:affiliation>LAPP Annecy, France</mods:affiliation></affiliation><affiliation><mods:affiliation>4 Now at Central Research Institute for Physics of the Hungarian Academy of Sciences, Budapest, Hungary.</mods:affiliation></affiliation></author><author><name sortKey="Villers, M" sort="Villers, M" uniqKey="Villers M" first="M." last="Villers">M. Villers</name><affiliation><mods:affiliation>Oxford, USA</mods:affiliation></affiliation></author><author><name sortKey="Wahlen, H" sort="Wahlen, H" uniqKey="Wahlen H" first="H." last="Wahlen">H. Wahlen</name><affiliation><mods:affiliation>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</mods:affiliation></affiliation></author><author><name sortKey="Whalley, M" sort="Whalley, M" uniqKey="Whalley M" first="M." last="Whalley">M. Whalley</name><affiliation><mods:affiliation>Sheffield, Australia</mods:affiliation></affiliation></author><author><name sortKey="Williams, D" sort="Williams, D" uniqKey="Williams D" first="D." last="Williams">D. Williams</name><affiliation><mods:affiliation>Liverpool, Australia</mods:affiliation></affiliation></author><author><name sortKey="Williams, W S C" sort="Williams, W S C" uniqKey="Williams W" first="W. S. C." last="Williams">W. S. C. Williams</name><affiliation><mods:affiliation>Oxford, USA</mods:affiliation></affiliation></author><author><name sortKey="Williamson, J" sort="Williamson, J" uniqKey="Williamson J" first="J." last="Williamson">J. Williamson</name><affiliation><mods:affiliation>Sheffield, Australia</mods:affiliation></affiliation></author><author><name sortKey="Wimpenny, S J" sort="Wimpenny, S J" uniqKey="Wimpenny S" first="S. J." last="Wimpenny">S. J. Wimpenny</name><affiliation><mods:affiliation>Sheffield, Australia</mods:affiliation></affiliation><affiliation><mods:affiliation>5 Now at Liverpool University, England.</mods:affiliation></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:E021B7115757B8D209F80D51E62BB5261F18DAF0</idno><date when="1981" year="1981">1981</date><idno type="doi">10.1016/0370-2693(81)90655-9</idno><idno type="url">https://api.istex.fr/document/E021B7115757B8D209F80D51E62BB5261F18DAF0/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">002991</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">002991</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a">Observation of wrong-sign tri-muon events in 250 GeV muon-nucleon interactions</title><author><name sortKey="Aubert, J J" sort="Aubert, J J" uniqKey="Aubert J" first="J. J." last="Aubert">J. J. Aubert</name><affiliation><mods:affiliation>LAPP Annecy, France</mods:affiliation></affiliation><affiliation><mods:affiliation>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</mods:affiliation></affiliation></author><author><name sortKey="Bassompierre, G" sort="Bassompierre, G" uniqKey="Bassompierre G" first="G." last="Bassompierre">G. Bassompierre</name><affiliation><mods:affiliation>LAPP Annecy, France</mods:affiliation></affiliation></author><author><name sortKey="Becks, K H" sort="Becks, K H" uniqKey="Becks K" first="K. H." last="Becks">K. H. Becks</name><affiliation><mods:affiliation>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</mods:affiliation></affiliation></author><author><name sortKey="Best, C" sort="Best, C" uniqKey="Best C" first="C." last="Best">C. Best</name><affiliation><mods:affiliation>Rutherford, USA</mods:affiliation></affiliation></author><author><name sortKey="Bohm, E" sort="Bohm, E" uniqKey="Bohm E" first="E." last="Böhm">E. Böhm</name><affiliation><mods:affiliation>Kiel, Germany</mods:affiliation></affiliation></author><author><name sortKey="De Bouard, X" sort="De Bouard, X" uniqKey="De Bouard X" first="X." last="De Bouard">X. De Bouard</name><affiliation><mods:affiliation>LAPP Annecy, France</mods:affiliation></affiliation></author><author><name sortKey="Brasse, F W" sort="Brasse, F W" uniqKey="Brasse F" first="F. W." last="Brasse">F. W. Brasse</name><affiliation><mods:affiliation>DESY Hamburg, Germany</mods:affiliation></affiliation></author><author><name sortKey="Broll, C" sort="Broll, C" uniqKey="Broll C" first="C." last="Broll">C. Broll</name><affiliation><mods:affiliation>LAPP Annecy, France</mods:affiliation></affiliation></author><author><name sortKey="Brown, S" sort="Brown, S" uniqKey="Brown S" first="S." last="Brown">S. Brown</name><affiliation><mods:affiliation>Liverpool, Australia</mods:affiliation></affiliation></author><author><name sortKey="Carr, J" sort="Carr, J" uniqKey="Carr J" first="J." last="Carr">J. Carr</name><affiliation><mods:affiliation>Rutherford, USA</mods:affiliation></affiliation></author><author><name sortKey="Clifft, R W" sort="Clifft, R W" uniqKey="Clifft R" first="R. W." last="Clifft">R. W. Clifft</name><affiliation><mods:affiliation>Rutherford, USA</mods:affiliation></affiliation></author><author><name sortKey="Cobb, J H" sort="Cobb, J H" uniqKey="Cobb J" first="J. H." last="Cobb">J. H. Cobb</name><affiliation><mods:affiliation>Lancaster, UK</mods:affiliation></affiliation></author><author><name sortKey="Coignet, G" sort="Coignet, G" uniqKey="Coignet G" first="G." last="Coignet">G. Coignet</name><affiliation><mods:affiliation>LAPP Annecy, France</mods:affiliation></affiliation></author><author><name sortKey="Combley, F" sort="Combley, F" uniqKey="Combley F" first="F." last="Combley">F. Combley</name><affiliation><mods:affiliation>Sheffield, Australia</mods:affiliation></affiliation></author><author><name sortKey="Crespo, J M" sort="Crespo, J M" uniqKey="Crespo J" first="J. M." last="Crespo">J. M. Crespo</name><affiliation><mods:affiliation>LAPP Annecy, France</mods:affiliation></affiliation><affiliation><mods:affiliation>2 Now at Junta de Energia Nuclear, Madrid, Spain.</mods:affiliation></affiliation></author><author><name sortKey="D Agostini, G" sort="D Agostini, G" uniqKey="D Agostini G" first="G." last="D'Agostini">G. D'Agostini</name><affiliation><mods:affiliation>LAPP Annecy, France</mods:affiliation></affiliation></author><author><name sortKey="Dalpiaz, P F" sort="Dalpiaz, P F" uniqKey="Dalpiaz P" first="P. F." last="Dalpiaz">P. F. Dalpiaz</name><affiliation><mods:affiliation>Turin, Italy</mods:affiliation></affiliation></author><author><name sortKey="Dalpiaz, P" sort="Dalpiaz, P" uniqKey="Dalpiaz P" first="P." last="Dalpiaz">P. Dalpiaz</name><affiliation><mods:affiliation>Turin, Italy</mods:affiliation></affiliation></author><author><name sortKey="Dau, W D" sort="Dau, W D" uniqKey="Dau W" first="W. D." last="Dau">W. D. Dau</name><affiliation><mods:affiliation>Kiel, Germany</mods:affiliation></affiliation></author><author><name sortKey="Davies, J K" sort="Davies, J K" uniqKey="Davies J" first="J. K." last="Davies">J. K. Davies</name><affiliation><mods:affiliation>Oxford, USA</mods:affiliation></affiliation></author><author><name sortKey="Declais, Y" sort="Declais, Y" uniqKey="Declais Y" first="Y." last="Déclais">Y. Déclais</name><affiliation><mods:affiliation>LAPP Annecy, France</mods:affiliation></affiliation></author><author><name sortKey="Dobinson, R W" sort="Dobinson, R W" uniqKey="Dobinson R" first="R. W." last="Dobinson">R. W. Dobinson</name><affiliation><mods:affiliation>CERN, Switzerland</mods:affiliation></affiliation></author><author><name sortKey="Dosselli, U" sort="Dosselli, U" uniqKey="Dosselli U" first="U." last="Dosselli">U. Dosselli</name><affiliation><mods:affiliation>CERN, Switzerland</mods:affiliation></affiliation></author><author><name sortKey="Drees, J" sort="Drees, J" uniqKey="Drees J" first="J." last="Drees">J. Drees</name><affiliation><mods:affiliation>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</mods:affiliation></affiliation></author><author><name sortKey="Edwards, A" sort="Edwards, A" uniqKey="Edwards A" first="A." last="Edwards">A. Edwards</name><affiliation><mods:affiliation>CERN, Switzerland</mods:affiliation></affiliation></author><author><name sortKey="Edwards, M" sort="Edwards, M" uniqKey="Edwards M" first="M." last="Edwards">M. Edwards</name><affiliation><mods:affiliation>Rutherford, USA</mods:affiliation></affiliation></author><author><name sortKey="Favier, J" sort="Favier, J" uniqKey="Favier J" first="J." last="Favier">J. Favier</name><affiliation><mods:affiliation>LAPP Annecy, France</mods:affiliation></affiliation></author><author><name sortKey="Ferrero, M I" sort="Ferrero, M I" uniqKey="Ferrero M" first="M. I." last="Ferrero">M. I. Ferrero</name><affiliation><mods:affiliation>Turin, Italy</mods:affiliation></affiliation></author><author><name sortKey="Flauger, W" sort="Flauger, W" uniqKey="Flauger W" first="W." last="Flauger">W. Flauger</name><affiliation><mods:affiliation>DESY Hamburg, Germany</mods:affiliation></affiliation></author><author><name sortKey="Gabathuler, E" sort="Gabathuler, E" uniqKey="Gabathuler E" first="E." last="Gabathuler">E. Gabathuler</name><affiliation><mods:affiliation>CERN, Switzerland</mods:affiliation></affiliation></author><author><name sortKey="Gamet, R" sort="Gamet, R" uniqKey="Gamet R" first="R." last="Gamet">R. Gamet</name><affiliation><mods:affiliation>Liverpool, Australia</mods:affiliation></affiliation></author><author><name sortKey="Gayler, J" sort="Gayler, J" uniqKey="Gayler J" first="J." last="Gayler">J. Gayler</name><affiliation><mods:affiliation>DESY Hamburg, Germany</mods:affiliation></affiliation></author><author><name sortKey="Gerhardt, V" sort="Gerhardt, V" uniqKey="Gerhardt V" first="V." last="Gerhardt">V. Gerhardt</name><affiliation><mods:affiliation>DESY Hamburg, Germany</mods:affiliation></affiliation></author><author><name sortKey="Ghez, P" sort="Ghez, P" uniqKey="Ghez P" first="P." last="Ghez">P. Ghez</name><affiliation><mods:affiliation>LAPP Annecy, France</mods:affiliation></affiliation></author><author><name sortKey="Gossling, C" sort="Gossling, C" uniqKey="Gossling C" first="C." last="Gössling">C. Gössling</name><affiliation><mods:affiliation>DESY Hamburg, Germany</mods:affiliation></affiliation></author><author><name sortKey="Gregory, P" sort="Gregory, P" uniqKey="Gregory P" first="P." last="Gregory">P. Gregory</name><affiliation><mods:affiliation>CERN, Switzerland</mods:affiliation></affiliation><affiliation><mods:affiliation>3 Now at Imperial College, London, England.</mods:affiliation></affiliation></author><author><name sortKey="Haas, J" sort="Haas, J" uniqKey="Haas J" first="J." last="Haas">J. Haas</name><affiliation><mods:affiliation>CERN, Switzerland</mods:affiliation></affiliation></author><author><name sortKey="Hamacher, K" sort="Hamacher, K" uniqKey="Hamacher K" first="K." last="Hamacher">K. Hamacher</name><affiliation><mods:affiliation>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</mods:affiliation></affiliation></author><author><name sortKey="Hayman, P" sort="Hayman, P" uniqKey="Hayman P" first="P." last="Hayman">P. Hayman</name><affiliation><mods:affiliation>Liverpool, Australia</mods:affiliation></affiliation></author><author><name sortKey="Henckes, M" sort="Henckes, M" uniqKey="Henckes M" first="M." last="Henckes">M. Henckes</name><affiliation><mods:affiliation>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</mods:affiliation></affiliation></author><author><name sortKey="Korbel, V" sort="Korbel, V" uniqKey="Korbel V" first="V." last="Korbel">V. Korbel</name><affiliation><mods:affiliation>DESY Hamburg, Germany</mods:affiliation></affiliation></author><author><name sortKey="Landgraf, U" sort="Landgraf, U" uniqKey="Landgraf U" first="U." last="Landgraf">U. Landgraf</name><affiliation><mods:affiliation>Freiburg, Germany</mods:affiliation></affiliation></author><author><name sortKey="Leenen, M" sort="Leenen, M" uniqKey="Leenen M" first="M." last="Leenen">M. Leenen</name><affiliation><mods:affiliation>CERN, Switzerland</mods:affiliation></affiliation></author><author><name sortKey="Maire, M" sort="Maire, M" uniqKey="Maire M" first="M." last="Maire">M. Maire</name><affiliation><mods:affiliation>LAPP Annecy, France</mods:affiliation></affiliation></author><author><name sortKey="Massonnet, L" sort="Massonnet, L" uniqKey="Massonnet L" first="L." last="Massonnet">L. Massonnet</name><affiliation><mods:affiliation>LAPP Annecy, France</mods:affiliation></affiliation></author><author><name sortKey="Minssieux, H" sort="Minssieux, H" uniqKey="Minssieux H" first="H." last="Minssieux">H. Minssieux</name><affiliation><mods:affiliation>LAPP Annecy, France</mods:affiliation></affiliation></author><author><name sortKey="Mohr, W" sort="Mohr, W" uniqKey="Mohr W" first="W." last="Mohr">W. Mohr</name><affiliation><mods:affiliation>Freiburg, Germany</mods:affiliation></affiliation></author><author><name sortKey="Montgomery, H E" sort="Montgomery, H E" uniqKey="Montgomery H" first="H. E." last="Montgomery">H. E. Montgomery</name><affiliation><mods:affiliation>CERN, Switzerland</mods:affiliation></affiliation></author><author><name sortKey="Moser, K" sort="Moser, K" uniqKey="Moser K" first="K." last="Moser">K. Moser</name><affiliation><mods:affiliation>Freiburg, Germany</mods:affiliation></affiliation></author><author><name sortKey="Mount, R P" sort="Mount, R P" uniqKey="Mount R" first="R. P." last="Mount">R. P. Mount</name><affiliation><mods:affiliation>Oxford, USA</mods:affiliation></affiliation></author><author><name sortKey="Norton, P R" sort="Norton, P R" uniqKey="Norton P" first="P. R." last="Norton">P. R. Norton</name><affiliation><mods:affiliation>Rutherford, USA</mods:affiliation></affiliation></author><author><name sortKey="Mcnicholas, J" sort="Mcnicholas, J" uniqKey="Mcnicholas J" first="J." last="Mcnicholas">J. Mcnicholas</name><affiliation><mods:affiliation>Oxford, USA</mods:affiliation></affiliation></author><author><name sortKey="Osborne, A M" sort="Osborne, A M" uniqKey="Osborne A" first="A. M." last="Osborne">A. M. Osborne</name><affiliation><mods:affiliation>CERN, Switzerland</mods:affiliation></affiliation></author><author><name sortKey="Payre, P" sort="Payre, P" uniqKey="Payre P" first="P." last="Payre">P. Payre</name><affiliation><mods:affiliation>LAPP Annecy, France</mods:affiliation></affiliation></author><author><name sortKey="Peroni, C" sort="Peroni, C" uniqKey="Peroni C" first="C." last="Peroni">C. Peroni</name><affiliation><mods:affiliation>Turin, Italy</mods:affiliation></affiliation></author><author><name sortKey="Pessard, H" sort="Pessard, H" uniqKey="Pessard H" first="H." last="Pessard">H. Pessard</name><affiliation><mods:affiliation>LAPP Annecy, France</mods:affiliation></affiliation></author><author><name sortKey="Pietrzyk, U" sort="Pietrzyk, U" uniqKey="Pietrzyk U" first="U." last="Pietrzyk">U. Pietrzyk</name><affiliation><mods:affiliation>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</mods:affiliation></affiliation></author><author><name sortKey="Rith, K" sort="Rith, K" uniqKey="Rith K" first="K." last="Rith">K. Rith</name><affiliation><mods:affiliation>Freiburg, Germany</mods:affiliation></affiliation></author><author><name sortKey="Schneegans, M" sort="Schneegans, M" uniqKey="Schneegans M" first="M." last="Schneegans">M. Schneegans</name><affiliation><mods:affiliation>LAPP Annecy, France</mods:affiliation></affiliation></author><author><name sortKey="Sloan, T" sort="Sloan, T" uniqKey="Sloan T" first="T." last="Sloan">T. Sloan</name><affiliation><mods:affiliation>Lancaster, UK</mods:affiliation></affiliation></author><author><name sortKey="Stier, H E" sort="Stier, H E" uniqKey="Stier H" first="H. E." last="Stier">H. E. Stier</name><affiliation><mods:affiliation>Freiburg, Germany</mods:affiliation></affiliation></author><author><name sortKey="Stockhausen, W" sort="Stockhausen, W" uniqKey="Stockhausen W" first="W." last="Stockhausen">W. Stockhausen</name><affiliation><mods:affiliation>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</mods:affiliation></affiliation></author><author><name sortKey="Thenard, J M" sort="Thenard, J M" uniqKey="Thenard J" first="J. M." last="Thénard">J. M. Thénard</name><affiliation><mods:affiliation>LAPP Annecy, France</mods:affiliation></affiliation></author><author><name sortKey="Thompson, J C" sort="Thompson, J C" uniqKey="Thompson J" first="J. C." last="Thompson">J. C. Thompson</name><affiliation><mods:affiliation>Rutherford, USA</mods:affiliation></affiliation></author><author><name sortKey="Urban, L" sort="Urban, L" uniqKey="Urban L" first="L." last="Urban">L. Urban</name><affiliation><mods:affiliation>LAPP Annecy, France</mods:affiliation></affiliation><affiliation><mods:affiliation>4 Now at Central Research Institute for Physics of the Hungarian Academy of Sciences, Budapest, Hungary.</mods:affiliation></affiliation></author><author><name sortKey="Villers, M" sort="Villers, M" uniqKey="Villers M" first="M." last="Villers">M. Villers</name><affiliation><mods:affiliation>Oxford, USA</mods:affiliation></affiliation></author><author><name sortKey="Wahlen, H" sort="Wahlen, H" uniqKey="Wahlen H" first="H." last="Wahlen">H. Wahlen</name><affiliation><mods:affiliation>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</mods:affiliation></affiliation></author><author><name sortKey="Whalley, M" sort="Whalley, M" uniqKey="Whalley M" first="M." last="Whalley">M. Whalley</name><affiliation><mods:affiliation>Sheffield, Australia</mods:affiliation></affiliation></author><author><name sortKey="Williams, D" sort="Williams, D" uniqKey="Williams D" first="D." last="Williams">D. Williams</name><affiliation><mods:affiliation>Liverpool, Australia</mods:affiliation></affiliation></author><author><name sortKey="Williams, W S C" sort="Williams, W S C" uniqKey="Williams W" first="W. S. C." last="Williams">W. S. C. Williams</name><affiliation><mods:affiliation>Oxford, USA</mods:affiliation></affiliation></author><author><name sortKey="Williamson, J" sort="Williamson, J" uniqKey="Williamson J" first="J." last="Williamson">J. Williamson</name><affiliation><mods:affiliation>Sheffield, Australia</mods:affiliation></affiliation></author><author><name sortKey="Wimpenny, S J" sort="Wimpenny, S J" uniqKey="Wimpenny S" first="S. J." last="Wimpenny">S. J. Wimpenny</name><affiliation><mods:affiliation>Sheffield, Australia</mods:affiliation></affiliation><affiliation><mods:affiliation>5 Now at Liverpool University, England.</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j">Physics Letters B</title><title level="j" type="abbrev">PLB</title><idno type="ISSN">0370-2693</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1981">1981</date><biblScope unit="volume">106</biblScope><biblScope unit="issue">5</biblScope><biblScope unit="page" from="419">419</biblScope><biblScope unit="page" to="422">422</biblScope></imprint><idno type="ISSN">0370-2693</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0370-2693</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Charm particle</term><term>Charm production</term><term>Decay chain</term><term>Fusion model predictions</term><term>Hadron</term><term>Hodoscope</term><term>Incident muon</term><term>Lett</term><term>Meson</term><term>Muon</term><term>November</term><term>Outgoing muons</term><term>Phys</term><term>Physics letters</term><term>Same sign</term><term>Stac</term><term>Trimuon</term><term>Trimuon events</term><term>Upper limit</term><term>Upper limits</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>Charm particle</term><term>Charm production</term><term>Decay chain</term><term>Fusion model predictions</term><term>Hadron</term><term>Hodoscope</term><term>Incident muon</term><term>Lett</term><term>Meson</term><term>Muon</term><term>November</term><term>Outgoing muons</term><term>Phys</term><term>Physics letters</term><term>Same sign</term><term>Stac</term><term>Trimuon</term><term>Trimuon events</term><term>Upper limit</term><term>Upper limits</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Abstract: Two trimuon events of the type μ+N→μ+μ+μ+X and one μ+N→μ+μ−μ−X have been observed in 250 GeV μ+ -iron interactions. The expected rate from the decay of hadrons (charm, π, K) is about one event. Other processes that may contribute are both beauty production and charm production with D0−D0 mixing. The data give upper limits of 12×10−36 cm2 for the cross section of beauty pair production by muons, and 20% for D0 ↔ D0 transitions due to mixing, both at 90% confidence level.</div></front></TEI><istex><corpusName>elsevier</corpusName><keywords><teeft><json:string>phys</json:string><json:string>hadron</json:string><json:string>muon</json:string><json:string>lett</json:string><json:string>trimuon</json:string><json:string>upper limit</json:string><json:string>stac</json:string><json:string>meson</json:string><json:string>charm production</json:string><json:string>hodoscope</json:string><json:string>november</json:string><json:string>trimuon events</json:string><json:string>outgoing muons</json:string><json:string>charm particle</json:string><json:string>same sign</json:string><json:string>incident muon</json:string><json:string>decay chain</json:string><json:string>fusion model predictions</json:string><json:string>upper limits</json:string><json:string>physics letters</json:string></teeft></keywords><author><json:item><name>J.J. Aubert</name><affiliations><json:string>LAPP Annecy, France</json:string><json:string>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</json:string></affiliations></json:item><json:item><name>G. Bassompierre</name><affiliations><json:string>LAPP Annecy, France</json:string></affiliations></json:item><json:item><name>K.H. Becks</name><affiliations><json:string>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</json:string></affiliations></json:item><json:item><name>C. Best</name><affiliations><json:string>Rutherford, USA</json:string></affiliations></json:item><json:item><name>E. Böhm</name><affiliations><json:string>Kiel, Germany</json:string></affiliations></json:item><json:item><name>X. de Bouard</name><affiliations><json:string>LAPP Annecy, France</json:string></affiliations></json:item><json:item><name>F.W. Brasse</name><affiliations><json:string>DESY Hamburg, Germany</json:string></affiliations></json:item><json:item><name>C. Broll</name><affiliations><json:string>LAPP Annecy, France</json:string></affiliations></json:item><json:item><name>S. Brown</name><affiliations><json:string>Liverpool, Australia</json:string></affiliations></json:item><json:item><name>J. Carr</name><affiliations><json:string>Rutherford, USA</json:string></affiliations></json:item><json:item><name>R.W. Clifft</name><affiliations><json:string>Rutherford, USA</json:string></affiliations></json:item><json:item><name>J.H. Cobb</name><affiliations><json:string>Lancaster, UK</json:string></affiliations></json:item><json:item><name>G. Coignet</name><affiliations><json:string>LAPP Annecy, France</json:string></affiliations></json:item><json:item><name>F. Combley</name><affiliations><json:string>Sheffield, Australia</json:string></affiliations></json:item><json:item><name>J.M. Crespo</name><affiliations><json:string>LAPP Annecy, France</json:string><json:string>2 Now at Junta de Energia Nuclear, Madrid, Spain.</json:string></affiliations></json:item><json:item><name>G. D'Agostini</name><affiliations><json:string>LAPP Annecy, France</json:string></affiliations></json:item><json:item><name>P.F. Dalpiaz</name><affiliations><json:string>Turin, Italy</json:string></affiliations></json:item><json:item><name>P. Dalpiaz</name><affiliations><json:string>Turin, Italy</json:string></affiliations></json:item><json:item><name>W.D. Dau</name><affiliations><json:string>Kiel, Germany</json:string></affiliations></json:item><json:item><name>J.K. Davies</name><affiliations><json:string>Oxford, USA</json:string></affiliations></json:item><json:item><name>Y. Déclais</name><affiliations><json:string>LAPP Annecy, France</json:string></affiliations></json:item><json:item><name>R.W. Dobinson</name><affiliations><json:string>CERN, Switzerland</json:string></affiliations></json:item><json:item><name>U. Dosselli</name><affiliations><json:string>CERN, Switzerland</json:string></affiliations></json:item><json:item><name>J. Drees</name><affiliations><json:string>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</json:string></affiliations></json:item><json:item><name>A. Edwards</name><affiliations><json:string>CERN, Switzerland</json:string></affiliations></json:item><json:item><name>M. Edwards</name><affiliations><json:string>Rutherford, USA</json:string></affiliations></json:item><json:item><name>J. Favier</name><affiliations><json:string>LAPP Annecy, France</json:string></affiliations></json:item><json:item><name>M.I. Ferrero</name><affiliations><json:string>Turin, Italy</json:string></affiliations></json:item><json:item><name>W. Flauger</name><affiliations><json:string>DESY Hamburg, Germany</json:string></affiliations></json:item><json:item><name>E. Gabathuler</name><affiliations><json:string>CERN, Switzerland</json:string></affiliations></json:item><json:item><name>R. Gamet</name><affiliations><json:string>Liverpool, Australia</json:string></affiliations></json:item><json:item><name>J. Gayler</name><affiliations><json:string>DESY Hamburg, Germany</json:string></affiliations></json:item><json:item><name>V. Gerhardt</name><affiliations><json:string>DESY Hamburg, Germany</json:string></affiliations></json:item><json:item><name>P. Ghez</name><affiliations><json:string>LAPP Annecy, France</json:string></affiliations></json:item><json:item><name>C. Gössling</name><affiliations><json:string>DESY Hamburg, Germany</json:string></affiliations></json:item><json:item><name>P. Gregory</name><affiliations><json:string>CERN, Switzerland</json:string><json:string>3 Now at Imperial College, London, England.</json:string></affiliations></json:item><json:item><name>J. Haas</name><affiliations><json:string>CERN, Switzerland</json:string></affiliations></json:item><json:item><name>K. Hamacher</name><affiliations><json:string>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</json:string></affiliations></json:item><json:item><name>P. Hayman</name><affiliations><json:string>Liverpool, Australia</json:string></affiliations></json:item><json:item><name>M. Henckes</name><affiliations><json:string>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</json:string></affiliations></json:item><json:item><name>V. Korbel</name><affiliations><json:string>DESY Hamburg, Germany</json:string></affiliations></json:item><json:item><name>U. Landgraf</name><affiliations><json:string>Freiburg, Germany</json:string></affiliations></json:item><json:item><name>M. Leenen</name><affiliations><json:string>CERN, Switzerland</json:string></affiliations></json:item><json:item><name>M. Maire</name><affiliations><json:string>LAPP Annecy, France</json:string></affiliations></json:item><json:item><name>L. Massonnet</name><affiliations><json:string>LAPP Annecy, France</json:string></affiliations></json:item><json:item><name>H. Minssieux</name><affiliations><json:string>LAPP Annecy, France</json:string></affiliations></json:item><json:item><name>W. Mohr</name><affiliations><json:string>Freiburg, Germany</json:string></affiliations></json:item><json:item><name>H.E. Montgomery</name><affiliations><json:string>CERN, Switzerland</json:string></affiliations></json:item><json:item><name>K. Moser</name><affiliations><json:string>Freiburg, Germany</json:string></affiliations></json:item><json:item><name>R.P. Mount</name><affiliations><json:string>Oxford, USA</json:string></affiliations></json:item><json:item><name>P.R. Norton</name><affiliations><json:string>Rutherford, USA</json:string></affiliations></json:item><json:item><name>J. McNicholas</name><affiliations><json:string>Oxford, USA</json:string></affiliations></json:item><json:item><name>A.M. Osborne</name><affiliations><json:string>CERN, Switzerland</json:string></affiliations></json:item><json:item><name>P. Payre</name><affiliations><json:string>LAPP Annecy, France</json:string></affiliations></json:item><json:item><name>C. Peroni</name><affiliations><json:string>Turin, Italy</json:string></affiliations></json:item><json:item><name>H. Pessard</name><affiliations><json:string>LAPP Annecy, France</json:string></affiliations></json:item><json:item><name>U. Pietrzyk</name><affiliations><json:string>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</json:string></affiliations></json:item><json:item><name>K. Rith</name><affiliations><json:string>Freiburg, Germany</json:string></affiliations></json:item><json:item><name>M. Schneegans</name><affiliations><json:string>LAPP Annecy, France</json:string></affiliations></json:item><json:item><name>T. Sloan</name><affiliations><json:string>Lancaster, UK</json:string></affiliations></json:item><json:item><name>H.E. Stier</name><affiliations><json:string>Freiburg, Germany</json:string></affiliations></json:item><json:item><name>W. Stockhausen</name><affiliations><json:string>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</json:string></affiliations></json:item><json:item><name>J.M. Thénard</name><affiliations><json:string>LAPP Annecy, France</json:string></affiliations></json:item><json:item><name>J.C. Thompson</name><affiliations><json:string>Rutherford, USA</json:string></affiliations></json:item><json:item><name>L. Urban</name><affiliations><json:string>LAPP Annecy, France</json:string><json:string>4 Now at Central Research Institute for Physics of the Hungarian Academy of Sciences, Budapest, Hungary.</json:string></affiliations></json:item><json:item><name>M. Villers</name><affiliations><json:string>Oxford, USA</json:string></affiliations></json:item><json:item><name>H. Wahlen</name><affiliations><json:string>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</json:string></affiliations></json:item><json:item><name>M. Whalley</name><affiliations><json:string>Sheffield, Australia</json:string></affiliations></json:item><json:item><name>D. Williams</name><affiliations><json:string>Liverpool, Australia</json:string></affiliations></json:item><json:item><name>W.S.C. Williams</name><affiliations><json:string>Oxford, USA</json:string></affiliations></json:item><json:item><name>J. Williamson</name><affiliations><json:string>Sheffield, Australia</json:string></affiliations></json:item><json:item><name>S.J. Wimpenny</name><affiliations><json:string>Sheffield, Australia</json:string><json:string>5 Now at Liverpool University, England.</json:string></affiliations></json:item></author><arkIstex>ark:/67375/6H6-9CRF1W81-L</arkIstex><language><json:string>eng</json:string></language><originalGenre><json:string>Full-length article</json:string></originalGenre><abstract>Abstract: Two trimuon events of the type μ+N→μ+μ+μ+X and one μ+N→μ+μ−μ−X have been observed in 250 GeV μ+ -iron interactions. The expected rate from the decay of hadrons (charm, π, K) is about one event. Other processes that may contribute are both beauty production and charm production with D0−D0 mixing. The data give upper limits of 12×10−36 cm2 for the cross section of beauty pair production by muons, and 20% for D0 ↔ D0 transitions due to mixing, both at 90% confidence level.</abstract><qualityIndicators><score>5.267</score><pdfWordCount>2271</pdfWordCount><pdfCharCount>11389</pdfCharCount><pdfVersion>1.2</pdfVersion><pdfPageCount>4</pdfPageCount><pdfPageSize>540 x 742 pts</pdfPageSize><refBibsNative>true</refBibsNative><abstractWordCount>83</abstractWordCount><abstractCharCount>484</abstractCharCount><keywordCount>0</keywordCount></qualityIndicators><title>Observation of wrong-sign tri-muon events in 250 GeV muon-nucleon interactions</title><pii><json:string>0370-2693(81)90655-9</json:string></pii><corporate><json:item><name>The European Muon Collaboration</name></json:item></corporate><genre><json:string>research-article</json:string></genre><host><title>Physics Letters B</title><language><json:string>unknown</json:string></language><publicationDate>1981</publicationDate><issn><json:string>0370-2693</json:string></issn><pii><json:string>S0370-2693(00)X0829-5</json:string></pii><volume>106</volume><issue>5</issue><pages><first>419</first><last>422</last></pages><genre><json:string>journal</json:string></genre></host><namedEntities><unitex><date><json:string>1981</json:string></date><geogName></geogName><orgName><json:string>Central Research Institute for Physics of the Hungarian Academy of Sciences, Budapest, Hungary</json:string><json:string>Liverpool University</json:string></orgName><orgName_funder></orgName_funder><orgName_provider></orgName_provider><persName><json:string>Now</json:string></persName><placeName><json:string>Py</json:string><json:string>Turin</json:string><json:string>Madrid</json:string><json:string>Sheffield</json:string><json:string>Liverpool</json:string><json:string>Wuppertal</json:string><json:string>Annecy</json:string><json:string>Lancaster</json:string><json:string>France</json:string><json:string>Marseille</json:string><json:string>Spain</json:string></placeName><ref_url></ref_url><ref_bibl><json:string>[ 1 - 7 ]</json:string><json:string>[15,16]</json:string><json:string>[18]</json:string><json:string>[6]</json:string><json:string>[4,7]</json:string><json:string>[2,3]</json:string><json:string>[17]</json:string><json:string>Barger et al. [7]</json:string><json:string>[1]</json:string><json:string>[8,9,19]</json:string><json:string>Ellis et al. [1]</json:string><json:string>Clark et al. [20]</json:string></ref_bibl><bibl></bibl></unitex></namedEntities><ark><json:string>ark:/67375/6H6-9CRF1W81-L</json:string></ark><categories><wos><json:string>1 - science</json:string><json:string>2 - physics, multidisciplinary</json:string></wos><scienceMetrix><json:string>1 - natural sciences</json:string><json:string>2 - physics & astronomy</json:string><json:string>3 - nuclear & particles physics</json:string></scienceMetrix><scopus><json:string>1 - Physical Sciences</json:string><json:string>2 - Physics and Astronomy</json:string><json:string>3 - Nuclear and High Energy Physics</json:string></scopus><inist><json:string>1 - sciences appliquees, technologies et medecines</json:string><json:string>2 - sciences biologiques et medicales</json:string><json:string>3 - sciences biologiques fondamentales et appliquees. psychologie</json:string></inist></categories><publicationDate>1981</publicationDate><copyrightDate>1981</copyrightDate><doi><json:string>10.1016/0370-2693(81)90655-9</json:string></doi><id>E021B7115757B8D209F80D51E62BB5261F18DAF0</id><score>1</score><fulltext><json:item><extension>pdf</extension><original>true</original><mimetype>application/pdf</mimetype><uri>https://api.istex.fr/document/E021B7115757B8D209F80D51E62BB5261F18DAF0/fulltext/pdf</uri></json:item><json:item><extension>zip</extension><original>false</original><mimetype>application/zip</mimetype><uri>https://api.istex.fr/document/E021B7115757B8D209F80D51E62BB5261F18DAF0/fulltext/zip</uri></json:item><istex:fulltextTEI uri="https://api.istex.fr/document/E021B7115757B8D209F80D51E62BB5261F18DAF0/fulltext/tei"><teiHeader><fileDesc><titleStmt><title level="a">Observation of wrong-sign tri-muon events in 250 GeV muon-nucleon interactions</title></titleStmt><publicationStmt><authority>ISTEX</authority><publisher>ELSEVIER</publisher><availability><p>ELSEVIER</p></availability><date>1981</date></publicationStmt><sourceDesc><biblStruct type="inbook"><analytic><title level="a">Observation of wrong-sign tri-muon events in 250 GeV muon-nucleon interactions</title><author role="org"><orgName>The European Muon Collaboration</orgName></author><author xml:id="author-0000"><persName><forename type="first">J.J.</forename><surname>Aubert</surname></persName><affiliation>LAPP Annecy, France</affiliation><affiliation>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</affiliation></author><author xml:id="author-0001"><persName><forename type="first">G.</forename><surname>Bassompierre</surname></persName><affiliation>LAPP Annecy, France</affiliation></author><author xml:id="author-0002"><persName><forename type="first">K.H.</forename><surname>Becks</surname></persName><affiliation>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</affiliation></author><author xml:id="author-0003"><persName><forename type="first">C.</forename><surname>Best</surname></persName><affiliation>Rutherford, USA</affiliation></author><author xml:id="author-0004"><persName><forename type="first">E.</forename><surname>Böhm</surname></persName><affiliation>Kiel, Germany</affiliation></author><author xml:id="author-0005"><persName><forename type="first">X.</forename><surname>de Bouard</surname></persName><affiliation>LAPP Annecy, France</affiliation></author><author xml:id="author-0006"><persName><forename type="first">F.W.</forename><surname>Brasse</surname></persName><affiliation>DESY Hamburg, Germany</affiliation></author><author xml:id="author-0007"><persName><forename type="first">C.</forename><surname>Broll</surname></persName><affiliation>LAPP Annecy, France</affiliation></author><author xml:id="author-0008"><persName><forename type="first">S.</forename><surname>Brown</surname></persName><affiliation>Liverpool, Australia</affiliation></author><author xml:id="author-0009"><persName><forename type="first">J.</forename><surname>Carr</surname></persName><affiliation>Rutherford, USA</affiliation></author><author xml:id="author-0010"><persName><forename type="first">R.W.</forename><surname>Clifft</surname></persName><affiliation>Rutherford, USA</affiliation></author><author xml:id="author-0011"><persName><forename type="first">J.H.</forename><surname>Cobb</surname></persName><affiliation>Lancaster, UK</affiliation></author><author xml:id="author-0012"><persName><forename type="first">G.</forename><surname>Coignet</surname></persName><affiliation>LAPP Annecy, France</affiliation></author><author xml:id="author-0013"><persName><forename type="first">F.</forename><surname>Combley</surname></persName><affiliation>Sheffield, Australia</affiliation></author><author xml:id="author-0014"><persName><forename type="first">J.M.</forename><surname>Crespo</surname></persName><affiliation>LAPP Annecy, France</affiliation><affiliation>2 Now at Junta de Energia Nuclear, Madrid, Spain.</affiliation></author><author xml:id="author-0015"><persName><forename type="first">G.</forename><surname>D'Agostini</surname></persName><affiliation>LAPP Annecy, France</affiliation></author><author xml:id="author-0016"><persName><forename type="first">P.F.</forename><surname>Dalpiaz</surname></persName><affiliation>Turin, Italy</affiliation></author><author xml:id="author-0017"><persName><forename type="first">P.</forename><surname>Dalpiaz</surname></persName><affiliation>Turin, Italy</affiliation></author><author xml:id="author-0018"><persName><forename type="first">W.D.</forename><surname>Dau</surname></persName><affiliation>Kiel, Germany</affiliation></author><author xml:id="author-0019"><persName><forename type="first">J.K.</forename><surname>Davies</surname></persName><affiliation>Oxford, USA</affiliation></author><author xml:id="author-0020"><persName><forename type="first">Y.</forename><surname>Déclais</surname></persName><affiliation>LAPP Annecy, France</affiliation></author><author xml:id="author-0021"><persName><forename type="first">R.W.</forename><surname>Dobinson</surname></persName><affiliation>CERN, Switzerland</affiliation></author><author xml:id="author-0022"><persName><forename type="first">U.</forename><surname>Dosselli</surname></persName><affiliation>CERN, Switzerland</affiliation></author><author xml:id="author-0023"><persName><forename type="first">J.</forename><surname>Drees</surname></persName><affiliation>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</affiliation></author><author xml:id="author-0024"><persName><forename type="first">A.</forename><surname>Edwards</surname></persName><affiliation>CERN, Switzerland</affiliation></author><author xml:id="author-0025"><persName><forename type="first">M.</forename><surname>Edwards</surname></persName><affiliation>Rutherford, USA</affiliation></author><author xml:id="author-0026"><persName><forename type="first">J.</forename><surname>Favier</surname></persName><affiliation>LAPP Annecy, France</affiliation></author><author xml:id="author-0027"><persName><forename type="first">M.I.</forename><surname>Ferrero</surname></persName><affiliation>Turin, Italy</affiliation></author><author xml:id="author-0028"><persName><forename type="first">W.</forename><surname>Flauger</surname></persName><affiliation>DESY Hamburg, Germany</affiliation></author><author xml:id="author-0029"><persName><forename type="first">E.</forename><surname>Gabathuler</surname></persName><affiliation>CERN, Switzerland</affiliation></author><author xml:id="author-0030"><persName><forename type="first">R.</forename><surname>Gamet</surname></persName><affiliation>Liverpool, Australia</affiliation></author><author xml:id="author-0031"><persName><forename type="first">J.</forename><surname>Gayler</surname></persName><affiliation>DESY Hamburg, Germany</affiliation></author><author xml:id="author-0032"><persName><forename type="first">V.</forename><surname>Gerhardt</surname></persName><affiliation>DESY Hamburg, Germany</affiliation></author><author xml:id="author-0033"><persName><forename type="first">P.</forename><surname>Ghez</surname></persName><affiliation>LAPP Annecy, France</affiliation></author><author xml:id="author-0034"><persName><forename type="first">C.</forename><surname>Gössling</surname></persName><affiliation>DESY Hamburg, Germany</affiliation></author><author xml:id="author-0035"><persName><forename type="first">P.</forename><surname>Gregory</surname></persName><affiliation>CERN, Switzerland</affiliation><affiliation>3 Now at Imperial College, London, England.</affiliation></author><author xml:id="author-0036"><persName><forename type="first">J.</forename><surname>Haas</surname></persName><affiliation>CERN, Switzerland</affiliation></author><author xml:id="author-0037"><persName><forename type="first">K.</forename><surname>Hamacher</surname></persName><affiliation>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</affiliation></author><author xml:id="author-0038"><persName><forename type="first">P.</forename><surname>Hayman</surname></persName><affiliation>Liverpool, Australia</affiliation></author><author xml:id="author-0039"><persName><forename type="first">M.</forename><surname>Henckes</surname></persName><affiliation>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</affiliation></author><author xml:id="author-0040"><persName><forename type="first">V.</forename><surname>Korbel</surname></persName><affiliation>DESY Hamburg, Germany</affiliation></author><author xml:id="author-0041"><persName><forename type="first">U.</forename><surname>Landgraf</surname></persName><affiliation>Freiburg, Germany</affiliation></author><author xml:id="author-0042"><persName><forename type="first">M.</forename><surname>Leenen</surname></persName><affiliation>CERN, Switzerland</affiliation></author><author xml:id="author-0043"><persName><forename type="first">M.</forename><surname>Maire</surname></persName><affiliation>LAPP Annecy, France</affiliation></author><author xml:id="author-0044"><persName><forename type="first">L.</forename><surname>Massonnet</surname></persName><affiliation>LAPP Annecy, France</affiliation></author><author xml:id="author-0045"><persName><forename type="first">H.</forename><surname>Minssieux</surname></persName><affiliation>LAPP Annecy, France</affiliation></author><author xml:id="author-0046"><persName><forename type="first">W.</forename><surname>Mohr</surname></persName><affiliation>Freiburg, Germany</affiliation></author><author xml:id="author-0047"><persName><forename type="first">H.E.</forename><surname>Montgomery</surname></persName><affiliation>CERN, Switzerland</affiliation></author><author xml:id="author-0048"><persName><forename type="first">K.</forename><surname>Moser</surname></persName><affiliation>Freiburg, Germany</affiliation></author><author xml:id="author-0049"><persName><forename type="first">R.P.</forename><surname>Mount</surname></persName><affiliation>Oxford, USA</affiliation></author><author xml:id="author-0050"><persName><forename type="first">P.R.</forename><surname>Norton</surname></persName><affiliation>Rutherford, USA</affiliation></author><author xml:id="author-0051"><persName><forename type="first">J.</forename><surname>McNicholas</surname></persName><affiliation>Oxford, USA</affiliation></author><author xml:id="author-0052"><persName><forename type="first">A.M.</forename><surname>Osborne</surname></persName><affiliation>CERN, Switzerland</affiliation></author><author xml:id="author-0053"><persName><forename type="first">P.</forename><surname>Payre</surname></persName><affiliation>LAPP Annecy, France</affiliation></author><author xml:id="author-0054"><persName><forename type="first">C.</forename><surname>Peroni</surname></persName><affiliation>Turin, Italy</affiliation></author><author xml:id="author-0055"><persName><forename type="first">H.</forename><surname>Pessard</surname></persName><affiliation>LAPP Annecy, France</affiliation></author><author xml:id="author-0056"><persName><forename type="first">U.</forename><surname>Pietrzyk</surname></persName><affiliation>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</affiliation></author><author xml:id="author-0057"><persName><forename type="first">K.</forename><surname>Rith</surname></persName><affiliation>Freiburg, Germany</affiliation></author><author xml:id="author-0058"><persName><forename type="first">M.</forename><surname>Schneegans</surname></persName><affiliation>LAPP Annecy, France</affiliation></author><author xml:id="author-0059"><persName><forename type="first">T.</forename><surname>Sloan</surname></persName><affiliation>Lancaster, UK</affiliation></author><author xml:id="author-0060"><persName><forename type="first">H.E.</forename><surname>Stier</surname></persName><affiliation>Freiburg, Germany</affiliation></author><author xml:id="author-0061"><persName><forename type="first">W.</forename><surname>Stockhausen</surname></persName><affiliation>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</affiliation></author><author xml:id="author-0062"><persName><forename type="first">J.M.</forename><surname>Thénard</surname></persName><affiliation>LAPP Annecy, France</affiliation></author><author xml:id="author-0063"><persName><forename type="first">J.C.</forename><surname>Thompson</surname></persName><affiliation>Rutherford, USA</affiliation></author><author xml:id="author-0064"><persName><forename type="first">L.</forename><surname>Urban</surname></persName><affiliation>LAPP Annecy, France</affiliation><affiliation>4 Now at Central Research Institute for Physics of the Hungarian Academy of Sciences, Budapest, Hungary.</affiliation></author><author xml:id="author-0065"><persName><forename type="first">M.</forename><surname>Villers</surname></persName><affiliation>Oxford, USA</affiliation></author><author xml:id="author-0066"><persName><forename type="first">H.</forename><surname>Wahlen</surname></persName><affiliation>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</affiliation></author><author xml:id="author-0067"><persName><forename type="first">M.</forename><surname>Whalley</surname></persName><affiliation>Sheffield, Australia</affiliation></author><author xml:id="author-0068"><persName><forename type="first">D.</forename><surname>Williams</surname></persName><affiliation>Liverpool, Australia</affiliation></author><author xml:id="author-0069"><persName><forename type="first">W.S.C.</forename><surname>Williams</surname></persName><affiliation>Oxford, USA</affiliation></author><author xml:id="author-0070"><persName><forename type="first">J.</forename><surname>Williamson</surname></persName><affiliation>Sheffield, Australia</affiliation></author><author xml:id="author-0071"><persName><forename type="first">S.J.</forename><surname>Wimpenny</surname></persName><affiliation>Sheffield, Australia</affiliation><affiliation>5 Now at Liverpool University, England.</affiliation></author><idno type="istex">E021B7115757B8D209F80D51E62BB5261F18DAF0</idno><idno type="DOI">10.1016/0370-2693(81)90655-9</idno><idno type="PII">0370-2693(81)90655-9</idno></analytic><monogr><title level="j">Physics Letters B</title><title level="j" type="abbrev">PLB</title><idno type="pISSN">0370-2693</idno><idno type="PII">S0370-2693(00)X0829-5</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1981"></date><biblScope unit="volume">106</biblScope><biblScope unit="issue">5</biblScope><biblScope unit="page" from="419">419</biblScope><biblScope unit="page" to="422">422</biblScope></imprint></monogr></biblStruct></sourceDesc></fileDesc><profileDesc><creation><date>1981</date></creation><langUsage><language ident="en">en</language></langUsage><abstract xml:lang="en"><p>Two trimuon events of the type μ+N→μ+μ+μ+X and one μ+N→μ+μ−μ−X have been observed in 250 GeV μ+ -iron interactions. The expected rate from the decay of hadrons (charm, π, K) is about one event. Other processes that may contribute are both beauty production and charm production with D0−D0 mixing. The data give upper limits of 12×10−36 cm2 for the cross section of beauty pair production by muons, and 20% for D0 ↔ D0 transitions due to mixing, both at 90% confidence level.</p></abstract></profileDesc><revisionDesc><change when="1981">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/E021B7115757B8D209F80D51E62BB5261F18DAF0/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Elsevier, elements deleted: tail"><istex:xmlDeclaration>version="1.0" encoding="utf-8"</istex:xmlDeclaration><istex:docType PUBLIC="-//ES//DTD journal article DTD version 4.5.2//EN//XML" URI="art452.dtd" name="istex:docType"></istex:docType><istex:document><converted-article version="4.5.2" docsubtype="fla"><item-info><jid>PLB</jid><aid>81906559</aid><ce:pii>0370-2693(81)90655-9</ce:pii><ce:doi>10.1016/0370-2693(81)90655-9</ce:doi><ce:copyright type="unknown" year="1981"></ce:copyright></item-info><head><ce:title>Observation of wrong-sign tri-muon events in 250 GeV muon-nucleon interactions</ce:title><ce:author-group><ce:collaboration><ce:text>The European Muon Collaboration</ce:text></ce:collaboration><ce:author><ce:given-name>J.J.</ce:given-name><ce:surname>Aubert</ce:surname><ce:cross-ref refid="AFF6"><ce:sup>f</ce:sup></ce:cross-ref><ce:cross-ref refid="FN1"><ce:sup>1</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>G.</ce:given-name><ce:surname>Bassompierre</ce:surname><ce:cross-ref refid="AFF6"><ce:sup>f</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>K.H.</ce:given-name><ce:surname>Becks</ce:surname><ce:cross-ref refid="FN1"><ce:sup>1</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>C.</ce:given-name><ce:surname>Best</ce:surname><ce:cross-ref refid="AFF9"><ce:sup>i</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>E.</ce:given-name><ce:surname>Böhm</ce:surname><ce:cross-ref refid="AFF4"><ce:sup>d</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>X.</ce:given-name><ce:surname>de Bouard</ce:surname><ce:cross-ref refid="AFF6"><ce:sup>f</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>F.W.</ce:given-name><ce:surname>Brasse</ce:surname><ce:cross-ref refid="AFF2"><ce:sup>b</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>C.</ce:given-name><ce:surname>Broll</ce:surname><ce:cross-ref refid="AFF6"><ce:sup>f</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>S.</ce:given-name><ce:surname>Brown</ce:surname><ce:cross-ref refid="AFF7"><ce:sup>g</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>J.</ce:given-name><ce:surname>Carr</ce:surname><ce:cross-ref refid="AFF9"><ce:sup>i</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>R.W.</ce:given-name><ce:surname>Clifft</ce:surname><ce:cross-ref refid="AFF9"><ce:sup>i</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>J.H.</ce:given-name><ce:surname>Cobb</ce:surname><ce:cross-ref refid="AFF5"><ce:sup>e</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>G.</ce:given-name><ce:surname>Coignet</ce:surname><ce:cross-ref refid="AFF6"><ce:sup>f</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>F.</ce:given-name><ce:surname>Combley</ce:surname><ce:cross-ref refid="AFF10"><ce:sup>j</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>J.M.</ce:given-name><ce:surname>Crespo</ce:surname><ce:cross-ref refid="AFF6"><ce:sup>f</ce:sup></ce:cross-ref><ce:cross-ref refid="FN2"><ce:sup>2</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>G.</ce:given-name><ce:surname>D'Agostini</ce:surname><ce:cross-ref refid="AFF6"><ce:sup>f</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>P.F.</ce:given-name><ce:surname>Dalpiaz</ce:surname><ce:cross-ref refid="AFF11"><ce:sup>k</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>P.</ce:given-name><ce:surname>Dalpiaz</ce:surname><ce:cross-ref refid="AFF11"><ce:sup>k</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>W.D.</ce:given-name><ce:surname>Dau</ce:surname><ce:cross-ref refid="AFF4"><ce:sup>d</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>J.K.</ce:given-name><ce:surname>Davies</ce:surname><ce:cross-ref refid="AFF8"><ce:sup>h</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>Y.</ce:given-name><ce:surname>Déclais</ce:surname><ce:cross-ref refid="AFF6"><ce:sup>f</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>R.W.</ce:given-name><ce:surname>Dobinson</ce:surname><ce:cross-ref refid="AFF1"><ce:sup>a</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>U.</ce:given-name><ce:surname>Dosselli</ce:surname><ce:cross-ref refid="AFF1"><ce:sup>a</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>J.</ce:given-name><ce:surname>Drees</ce:surname><ce:cross-ref refid="FN1"><ce:sup>1</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>A.</ce:given-name><ce:surname>Edwards</ce:surname><ce:cross-ref refid="AFF1"><ce:sup>a</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>M.</ce:given-name><ce:surname>Edwards</ce:surname><ce:cross-ref refid="AFF9"><ce:sup>i</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>J.</ce:given-name><ce:surname>Favier</ce:surname><ce:cross-ref refid="AFF6"><ce:sup>f</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>M.I.</ce:given-name><ce:surname>Ferrero</ce:surname><ce:cross-ref refid="AFF11"><ce:sup>k</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>W.</ce:given-name><ce:surname>Flauger</ce:surname><ce:cross-ref refid="AFF2"><ce:sup>b</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>E.</ce:given-name><ce:surname>Gabathuler</ce:surname><ce:cross-ref refid="AFF1"><ce:sup>a</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>R.</ce:given-name><ce:surname>Gamet</ce:surname><ce:cross-ref refid="AFF7"><ce:sup>g</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>J.</ce:given-name><ce:surname>Gayler</ce:surname><ce:cross-ref refid="AFF2"><ce:sup>b</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>V.</ce:given-name><ce:surname>Gerhardt</ce:surname><ce:cross-ref refid="AFF2"><ce:sup>b</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>P.</ce:given-name><ce:surname>Ghez</ce:surname><ce:cross-ref refid="AFF6"><ce:sup>f</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>C.</ce:given-name><ce:surname>Gössling</ce:surname><ce:cross-ref refid="AFF2"><ce:sup>b</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>P.</ce:given-name><ce:surname>Gregory</ce:surname><ce:cross-ref refid="AFF1"><ce:sup>a</ce:sup></ce:cross-ref><ce:cross-ref refid="FN3"><ce:sup>3</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>J.</ce:given-name><ce:surname>Haas</ce:surname><ce:cross-ref refid="AFF1"><ce:sup>a</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>K.</ce:given-name><ce:surname>Hamacher</ce:surname><ce:cross-ref refid="FN1"><ce:sup>1</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>P.</ce:given-name><ce:surname>Hayman</ce:surname><ce:cross-ref refid="AFF7"><ce:sup>g</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>M.</ce:given-name><ce:surname>Henckes</ce:surname><ce:cross-ref refid="FN1"><ce:sup>1</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>V.</ce:given-name><ce:surname>Korbel</ce:surname><ce:cross-ref refid="AFF2"><ce:sup>b</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>U.</ce:given-name><ce:surname>Landgraf</ce:surname><ce:cross-ref refid="AFF3"><ce:sup>c</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>M.</ce:given-name><ce:surname>Leenen</ce:surname><ce:cross-ref refid="AFF1"><ce:sup>a</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>M.</ce:given-name><ce:surname>Maire</ce:surname><ce:cross-ref refid="AFF6"><ce:sup>f</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>L.</ce:given-name><ce:surname>Massonnet</ce:surname><ce:cross-ref refid="AFF6"><ce:sup>f</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>H.</ce:given-name><ce:surname>Minssieux</ce:surname><ce:cross-ref refid="AFF6"><ce:sup>f</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>W.</ce:given-name><ce:surname>Mohr</ce:surname><ce:cross-ref refid="AFF3"><ce:sup>c</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>H.E.</ce:given-name><ce:surname>Montgomery</ce:surname><ce:cross-ref refid="AFF1"><ce:sup>a</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>K.</ce:given-name><ce:surname>Moser</ce:surname><ce:cross-ref refid="AFF3"><ce:sup>c</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>R.P.</ce:given-name><ce:surname>Mount</ce:surname><ce:cross-ref refid="AFF8"><ce:sup>h</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>P.R.</ce:given-name><ce:surname>Norton</ce:surname><ce:cross-ref refid="AFF9"><ce:sup>i</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>J.</ce:given-name><ce:surname>McNicholas</ce:surname><ce:cross-ref refid="AFF8"><ce:sup>h</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>A.M.</ce:given-name><ce:surname>Osborne</ce:surname><ce:cross-ref refid="AFF1"><ce:sup>a</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>P.</ce:given-name><ce:surname>Payre</ce:surname><ce:cross-ref refid="AFF6"><ce:sup>f</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>C.</ce:given-name><ce:surname>Peroni</ce:surname><ce:cross-ref refid="AFF11"><ce:sup>k</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>H.</ce:given-name><ce:surname>Pessard</ce:surname><ce:cross-ref refid="AFF6"><ce:sup>f</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>U.</ce:given-name><ce:surname>Pietrzyk</ce:surname><ce:cross-ref refid="FN1"><ce:sup>1</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>K.</ce:given-name><ce:surname>Rith</ce:surname><ce:cross-ref refid="AFF3"><ce:sup>c</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>M.</ce:given-name><ce:surname>Schneegans</ce:surname><ce:cross-ref refid="AFF6"><ce:sup>f</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>T.</ce:given-name><ce:surname>Sloan</ce:surname><ce:cross-ref refid="AFF5"><ce:sup>e</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>H.E.</ce:given-name><ce:surname>Stier</ce:surname><ce:cross-ref refid="AFF3"><ce:sup>c</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>W.</ce:given-name><ce:surname>Stockhausen</ce:surname><ce:cross-ref refid="FN1"><ce:sup>1</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>J.M.</ce:given-name><ce:surname>Thénard</ce:surname><ce:cross-ref refid="AFF6"><ce:sup>f</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>J.C.</ce:given-name><ce:surname>Thompson</ce:surname><ce:cross-ref refid="AFF9"><ce:sup>i</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>L.</ce:given-name><ce:surname>Urban</ce:surname><ce:cross-ref refid="AFF6"><ce:sup>f</ce:sup></ce:cross-ref><ce:cross-ref refid="FN4"><ce:sup>4</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>M.</ce:given-name><ce:surname>Villers</ce:surname><ce:cross-ref refid="AFF8"><ce:sup>h</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>H.</ce:given-name><ce:surname>Wahlen</ce:surname><ce:cross-ref refid="FN1"><ce:sup>1</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>M.</ce:given-name><ce:surname>Whalley</ce:surname><ce:cross-ref refid="AFF10"><ce:sup>j</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>D.</ce:given-name><ce:surname>Williams</ce:surname><ce:cross-ref refid="AFF7"><ce:sup>g</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>W.S.C.</ce:given-name><ce:surname>Williams</ce:surname><ce:cross-ref refid="AFF8"><ce:sup>h</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>J.</ce:given-name><ce:surname>Williamson</ce:surname><ce:cross-ref refid="AFF10"><ce:sup>j</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>S.J.</ce:given-name><ce:surname>Wimpenny</ce:surname><ce:cross-ref refid="AFF10"><ce:sup>j</ce:sup></ce:cross-ref><ce:cross-ref refid="FN5"><ce:sup>5</ce:sup></ce:cross-ref></ce:author><ce:affiliation id="AFF1"><ce:label>a</ce:label><ce:textfn>CERN, Switzerland</ce:textfn></ce:affiliation><ce:affiliation id="AFF2"><ce:label>b</ce:label><ce:textfn>DESY Hamburg, Germany</ce:textfn></ce:affiliation><ce:affiliation id="AFF3"><ce:label>c</ce:label><ce:textfn>Freiburg, Germany</ce:textfn></ce:affiliation><ce:affiliation id="AFF4"><ce:label>d</ce:label><ce:textfn>Kiel, Germany</ce:textfn></ce:affiliation><ce:affiliation id="AFF5"><ce:label>e</ce:label><ce:textfn>Lancaster, UK</ce:textfn></ce:affiliation><ce:affiliation id="AFF6"><ce:label>f</ce:label><ce:textfn>LAPP Annecy, France</ce:textfn></ce:affiliation><ce:affiliation id="AFF7"><ce:label>g</ce:label><ce:textfn>Liverpool, Australia</ce:textfn></ce:affiliation><ce:affiliation id="AFF8"><ce:label>h</ce:label><ce:textfn>Oxford, USA</ce:textfn></ce:affiliation><ce:affiliation id="AFF9"><ce:label>i</ce:label><ce:textfn>Rutherford, USA</ce:textfn></ce:affiliation><ce:affiliation id="AFF10"><ce:label>j</ce:label><ce:textfn>Sheffield, Australia</ce:textfn></ce:affiliation><ce:affiliation id="AFF11"><ce:label>k</ce:label><ce:textfn>Turin, Italy</ce:textfn></ce:affiliation><ce:footnote id="FN1"><ce:label>1</ce:label><ce:note-para>Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</ce:note-para></ce:footnote><ce:footnote id="FN2"><ce:label>2</ce:label><ce:note-para>Now at Junta de Energia Nuclear, Madrid, Spain.</ce:note-para></ce:footnote><ce:footnote id="FN3"><ce:label>3</ce:label><ce:note-para>Now at Imperial College, London, England.</ce:note-para></ce:footnote><ce:footnote id="FN4"><ce:label>4</ce:label><ce:note-para>Now at Central Research Institute for Physics of the Hungarian Academy of Sciences, Budapest, Hungary.</ce:note-para></ce:footnote><ce:footnote id="FN5"><ce:label>5</ce:label><ce:note-para>Now at Liverpool University, England.</ce:note-para></ce:footnote></ce:author-group><ce:date-received day="4" month="8" year="1981"></ce:date-received><ce:abstract><ce:section-title>Abstract</ce:section-title><ce:abstract-sec><ce:simple-para>Two trimuon events of the type <ce:italic>μ</ce:italic><ce:sup>+</ce:sup>N→<ce:italic>μ</ce:italic><ce:sup>+</ce:sup><ce:italic>μ</ce:italic><ce:sup>+</ce:sup><ce:italic>μ</ce:italic><ce:sup>+</ce:sup>X and one <ce:italic>μ</ce:italic><ce:sup>+</ce:sup>N→<ce:italic>μ</ce:italic><ce:sup>+</ce:sup><ce:italic>μ</ce:italic><ce:sup>−</ce:sup><ce:italic>μ</ce:italic><ce:sup>−</ce:sup>X have been observed in 250 GeV <ce:italic>μ</ce:italic><ce:sup>+</ce:sup> -iron interactions. The expected rate from the decay of hadrons (charm, <ce:italic>π</ce:italic>, K) is about one event. Other processes that may contribute are both beauty production and charm production with <math altimg="si1.gif"><rm>D</rm><sup>0</sup>−<ovl type="bar"><rm>D</rm></ovl><sup>0</sup></math> mixing. The data give upper limits of 12×10<ce:sup>−36</ce:sup> cm<ce:sup>2</ce:sup> for the cross section of beauty pair production by muons, and 20% for <math altimg="si2.gif"><rm>D</rm><sup>0</sup> ↔ <ovl type="bar"><rm>D</rm></ovl><sup>0</sup></math> transitions due to mixing, both at 90% confidence level.</ce:simple-para></ce:abstract-sec></ce:abstract></head></converted-article></istex:document></istex:metadataXml><mods version="3.6"><titleInfo><title>Observation of wrong-sign tri-muon events in 250 GeV muon-nucleon interactions</title></titleInfo><titleInfo type="alternative" contentType="CDATA"><title>Observation of wrong-sign tri-muon events in 250 GeV muon-nucleon interactions</title></titleInfo><name type="corporate"><namePart>The European Muon Collaboration</namePart></name><name type="personal"><namePart type="given">J.J.</namePart><namePart type="family">Aubert</namePart><affiliation>LAPP Annecy, France</affiliation><affiliation>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">G.</namePart><namePart type="family">Bassompierre</namePart><affiliation>LAPP Annecy, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">K.H.</namePart><namePart type="family">Becks</namePart><affiliation>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">C.</namePart><namePart type="family">Best</namePart><affiliation>Rutherford, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">E.</namePart><namePart type="family">Böhm</namePart><affiliation>Kiel, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">X.</namePart><namePart type="family">de Bouard</namePart><affiliation>LAPP Annecy, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">F.W.</namePart><namePart type="family">Brasse</namePart><affiliation>DESY Hamburg, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">C.</namePart><namePart type="family">Broll</namePart><affiliation>LAPP Annecy, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">S.</namePart><namePart type="family">Brown</namePart><affiliation>Liverpool, Australia</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">J.</namePart><namePart type="family">Carr</namePart><affiliation>Rutherford, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">R.W.</namePart><namePart type="family">Clifft</namePart><affiliation>Rutherford, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">J.H.</namePart><namePart type="family">Cobb</namePart><affiliation>Lancaster, UK</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">G.</namePart><namePart type="family">Coignet</namePart><affiliation>LAPP Annecy, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">F.</namePart><namePart type="family">Combley</namePart><affiliation>Sheffield, Australia</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">J.M.</namePart><namePart type="family">Crespo</namePart><affiliation>LAPP Annecy, France</affiliation><affiliation>2 Now at Junta de Energia Nuclear, Madrid, Spain.</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">G.</namePart><namePart type="family">D'Agostini</namePart><affiliation>LAPP Annecy, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">P.F.</namePart><namePart type="family">Dalpiaz</namePart><affiliation>Turin, Italy</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">P.</namePart><namePart type="family">Dalpiaz</namePart><affiliation>Turin, Italy</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">W.D.</namePart><namePart type="family">Dau</namePart><affiliation>Kiel, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">J.K.</namePart><namePart type="family">Davies</namePart><affiliation>Oxford, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Y.</namePart><namePart type="family">Déclais</namePart><affiliation>LAPP Annecy, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">R.W.</namePart><namePart type="family">Dobinson</namePart><affiliation>CERN, Switzerland</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">U.</namePart><namePart type="family">Dosselli</namePart><affiliation>CERN, Switzerland</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">J.</namePart><namePart type="family">Drees</namePart><affiliation>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">A.</namePart><namePart type="family">Edwards</namePart><affiliation>CERN, Switzerland</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">M.</namePart><namePart type="family">Edwards</namePart><affiliation>Rutherford, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">J.</namePart><namePart type="family">Favier</namePart><affiliation>LAPP Annecy, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">M.I.</namePart><namePart type="family">Ferrero</namePart><affiliation>Turin, Italy</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">W.</namePart><namePart type="family">Flauger</namePart><affiliation>DESY Hamburg, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">E.</namePart><namePart type="family">Gabathuler</namePart><affiliation>CERN, Switzerland</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">R.</namePart><namePart type="family">Gamet</namePart><affiliation>Liverpool, Australia</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">J.</namePart><namePart type="family">Gayler</namePart><affiliation>DESY Hamburg, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">V.</namePart><namePart type="family">Gerhardt</namePart><affiliation>DESY Hamburg, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">P.</namePart><namePart type="family">Ghez</namePart><affiliation>LAPP Annecy, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">C.</namePart><namePart type="family">Gössling</namePart><affiliation>DESY Hamburg, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">P.</namePart><namePart type="family">Gregory</namePart><affiliation>CERN, Switzerland</affiliation><affiliation>3 Now at Imperial College, London, England.</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">J.</namePart><namePart type="family">Haas</namePart><affiliation>CERN, Switzerland</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">K.</namePart><namePart type="family">Hamacher</namePart><affiliation>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">P.</namePart><namePart type="family">Hayman</namePart><affiliation>Liverpool, Australia</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">M.</namePart><namePart type="family">Henckes</namePart><affiliation>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">V.</namePart><namePart type="family">Korbel</namePart><affiliation>DESY Hamburg, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">U.</namePart><namePart type="family">Landgraf</namePart><affiliation>Freiburg, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">M.</namePart><namePart type="family">Leenen</namePart><affiliation>CERN, Switzerland</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">M.</namePart><namePart type="family">Maire</namePart><affiliation>LAPP Annecy, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">L.</namePart><namePart type="family">Massonnet</namePart><affiliation>LAPP Annecy, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">H.</namePart><namePart type="family">Minssieux</namePart><affiliation>LAPP Annecy, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">W.</namePart><namePart type="family">Mohr</namePart><affiliation>Freiburg, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">H.E.</namePart><namePart type="family">Montgomery</namePart><affiliation>CERN, Switzerland</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">K.</namePart><namePart type="family">Moser</namePart><affiliation>Freiburg, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">R.P.</namePart><namePart type="family">Mount</namePart><affiliation>Oxford, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">P.R.</namePart><namePart type="family">Norton</namePart><affiliation>Rutherford, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">J.</namePart><namePart type="family">McNicholas</namePart><affiliation>Oxford, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">A.M.</namePart><namePart type="family">Osborne</namePart><affiliation>CERN, Switzerland</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">P.</namePart><namePart type="family">Payre</namePart><affiliation>LAPP Annecy, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">C.</namePart><namePart type="family">Peroni</namePart><affiliation>Turin, Italy</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">H.</namePart><namePart type="family">Pessard</namePart><affiliation>LAPP Annecy, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">U.</namePart><namePart type="family">Pietrzyk</namePart><affiliation>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">K.</namePart><namePart type="family">Rith</namePart><affiliation>Freiburg, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">M.</namePart><namePart type="family">Schneegans</namePart><affiliation>LAPP Annecy, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">T.</namePart><namePart type="family">Sloan</namePart><affiliation>Lancaster, UK</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">H.E.</namePart><namePart type="family">Stier</namePart><affiliation>Freiburg, Germany</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">W.</namePart><namePart type="family">Stockhausen</namePart><affiliation>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">J.M.</namePart><namePart type="family">Thénard</namePart><affiliation>LAPP Annecy, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">J.C.</namePart><namePart type="family">Thompson</namePart><affiliation>Rutherford, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">L.</namePart><namePart type="family">Urban</namePart><affiliation>LAPP Annecy, France</affiliation><affiliation>4 Now at Central Research Institute for Physics of the Hungarian Academy of Sciences, Budapest, Hungary.</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">M.</namePart><namePart type="family">Villers</namePart><affiliation>Oxford, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">H.</namePart><namePart type="family">Wahlen</namePart><affiliation>1 Now also at Faculté des Sciences de Luminy, Université d'Aix-Marseille II, France.</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">M.</namePart><namePart type="family">Whalley</namePart><affiliation>Sheffield, Australia</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">D.</namePart><namePart type="family">Williams</namePart><affiliation>Liverpool, Australia</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">W.S.C.</namePart><namePart type="family">Williams</namePart><affiliation>Oxford, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">J.</namePart><namePart type="family">Williamson</namePart><affiliation>Sheffield, Australia</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">S.J.</namePart><namePart type="family">Wimpenny</namePart><affiliation>Sheffield, Australia</affiliation><affiliation>5 Now at Liverpool University, England.</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="research-article" displayLabel="Full-length article" authority="ISTEX" authorityURI="https://content-type.data.istex.fr" valueURI="https://content-type.data.istex.fr/ark:/67375/XTP-1JC4F85T-7">research-article</genre><originInfo><publisher>ELSEVIER</publisher><dateIssued encoding="w3cdtf">1981</dateIssued><copyrightDate encoding="w3cdtf">1981</copyrightDate></originInfo><language><languageTerm type="code" authority="iso639-2b">eng</languageTerm><languageTerm type="code" authority="rfc3066">en</languageTerm></language><abstract lang="en">Abstract: Two trimuon events of the type μ+N→μ+μ+μ+X and one μ+N→μ+μ−μ−X have been observed in 250 GeV μ+ -iron interactions. The expected rate from the decay of hadrons (charm, π, K) is about one event. Other processes that may contribute are both beauty production and charm production with D0−D0 mixing. The data give upper limits of 12×10−36 cm2 for the cross section of beauty pair production by muons, and 20% for D0 ↔ D0 transitions due to mixing, both at 90% confidence level.</abstract><relatedItem type="host"><titleInfo><title>Physics Letters B</title></titleInfo><titleInfo type="abbreviated"><title>PLB</title></titleInfo><genre type="journal" authority="ISTEX" authorityURI="https://publication-type.data.istex.fr" valueURI="https://publication-type.data.istex.fr/ark:/67375/JMC-0GLKJH51-B">journal</genre><originInfo><publisher>ELSEVIER</publisher><dateIssued encoding="w3cdtf">19811119</dateIssued></originInfo><identifier type="ISSN">0370-2693</identifier><identifier type="PII">S0370-2693(00)X0829-5</identifier><part><date>19811119</date><detail type="volume"><number>106</number><caption>vol.</caption></detail><detail type="issue"><number>5</number><caption>no.</caption></detail><extent unit="issue-pages"><start>347</start><end>432</end></extent><extent unit="pages"><start>419</start><end>422</end></extent></part></relatedItem><identifier type="istex">E021B7115757B8D209F80D51E62BB5261F18DAF0</identifier><identifier type="ark">ark:/67375/6H6-9CRF1W81-L</identifier><identifier type="DOI">10.1016/0370-2693(81)90655-9</identifier><identifier type="PII">0370-2693(81)90655-9</identifier><recordInfo><recordContentSource authority="ISTEX" authorityURI="https://loaded-corpus.data.istex.fr" valueURI="https://loaded-corpus.data.istex.fr/ark:/67375/XBH-HKKZVM7B-M">elsevier</recordContentSource></recordInfo></mods><json:item><extension>json</extension><original>false</original><mimetype>application/json</mimetype><uri>https://api.istex.fr/document/E021B7115757B8D209F80D51E62BB5261F18DAF0/metadata/json</uri></json:item></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Asie/explor/AustralieFrV1/Data/Istex/Corpus
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 002991 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Istex/Corpus/biblio.hfd -nk 002991 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Wicri/Asie
|area= AustralieFrV1
|flux= Istex
|étape= Corpus
|type= RBID
|clé= ISTEX:E021B7115757B8D209F80D51E62BB5261F18DAF0
|texte= Observation of wrong-sign tri-muon events in 250 GeV muon-nucleon interactions
}}
| This area was generated with Dilib version V0.6.33. |  |