Apparent superluminal neutrino propagation caused by nonlinear coherent interactions in matter
Identifieur interne : 000267 ( France/Analysis ); précédent : 000266; suivant : 000268Apparent superluminal neutrino propagation caused by nonlinear coherent interactions in matter
Auteurs : Ram Brustein [Israël, France, Allemagne] ; Dmitri Semikoz [France, Russie]Source :
- Physics letters. Section B [ 0370-2693 ] ; 2012.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Particule élémentaire.
English descriptors
- KwdEn :
Abstract
Quantum coherence can significantly increase the strength of the forward scattering of neutrinos propagating through the Earth and interacting with matter. The index of refraction of the neutrinos propagating in a medium and hence their phase velocity is determined by the forward scattering. So, depending on the nature of the interaction of neutrinos with matter, their phase velocity can be larger than the speed of light in vacuum. We show that such effects can explain the apparent superluminal propagation of muon neutrinos found recently by the OPERA experiment. Our proposal explains why the neutrino oscillations and the propagation of neutrinos from supernova 1987A are unaffected. It can be verified by changing the amount of neutrino coherence or by changing the composition of matter in which they propagate.
Url:
Affiliations:
- Allemagne, France, Israël, Russie
- Bavière, District de Haute-Bavière, District fédéral central, Île-de-France
- Moscou, Munich, Paris
- Université Louis-et-Maximilien de Munich
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Pascal:12-0224573Le document en format XML
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<front><div type="abstract" xml:lang="en">Quantum coherence can significantly increase the strength of the forward scattering of neutrinos propagating through the Earth and interacting with matter. The index of refraction of the neutrinos propagating in a medium and hence their phase velocity is determined by the forward scattering. So, depending on the nature of the interaction of neutrinos with matter, their phase velocity can be larger than the speed of light in vacuum. We show that such effects can explain the apparent superluminal propagation of muon neutrinos found recently by the OPERA experiment. Our proposal explains why the neutrino oscillations and the propagation of neutrinos from supernova 1987A are unaffected. It can be verified by changing the amount of neutrino coherence or by changing the composition of matter in which they propagate.</div>
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