On the possibility of superluminal neutrino propagation
Identifieur interne : 000906 ( Main/Exploration ); précédent : 000905; suivant : 000907On the possibility of superluminal neutrino propagation
Auteurs : Jean Alexandre [Royaume-Uni] ; John Ellis [Royaume-Uni, Suisse] ; Nick E. Mavromatos [Royaume-Uni, Suisse]Source :
- Physics letters. Section B [ 0370-2693 ] ; 2012.
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- Pascal (Inist)
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- topic : Particule élémentaire.
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Abstract
We analyze the possibility of superluminal neutrino propagation δν ≡ (v - c)/c > 0 as indicated by OPERA data, in view of previous phenomenological constraints from supernova SN1987a and gravitational Cerenkov radiation. We argue that the SN1987a data rule out δν ∼ (Eν/MN)N for N ≤ 2 and exclude, in particular, a Lorentz-invariant interpretation in terms of a 'conventional' tachyonic neutrino. We present two toy Lorentz-violating theoretical models, one a Lifshitz-type fermion model with superluminality depending quadratically on energy, and the other a Lorentz-violating modification of a massless Abelian gauge theory with axial-vector couplings to fermions. In the presence of an appropriate background field, fermions may propagate superluminally or subluminally, depending inversely on energy, and on direction. Reconciling OPERA with SN1987a would require this background field to depend on location.
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B</title><idno type="ISSN">0370-2693</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Elementary particles</term><term>Fermion field</term><term>Fermions</term><term>Gauge theory</term><term>Gravitational radiation</term><term>Lorentz invariance</term><term>Massless particles</term><term>Neutrinos</term><term>Supernovae</term><term>Theoretical model</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Neutrino</term><term>Supernova</term><term>Rayonnement gravitationnel</term><term>Invariance Lorentz</term><term>Modèle théorique</term><term>Fermion</term><term>Théorie jauge</term><term>Champ fermion</term><term>Particule sans masse</term><term>Particule élémentaire</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Particule élémentaire</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">We analyze the possibility of superluminal neutrino propagation δν ≡ (v - c)/c > 0 as indicated by OPERA data, in view of previous phenomenological constraints from supernova SN1987a and gravitational Cerenkov radiation. We argue that the SN1987a data rule out δν ∼ (E<sub>ν/</sub>M<sub>N</sub>)<sup>N</sup> for N ≤ 2 and exclude, in particular, a Lorentz-invariant interpretation in terms of a 'conventional' tachyonic neutrino. We present two toy Lorentz-violating theoretical models, one a Lifshitz-type fermion model with superluminality depending quadratically on energy, and the other a Lorentz-violating modification of a massless Abelian gauge theory with axial-vector couplings to fermions. In the presence of an appropriate background field, fermions may propagate superluminally or subluminally, depending inversely on energy, and on direction. Reconciling OPERA with SN1987a would require this background field to depend on location.</div></front></TEI><affiliations><list><country><li>Royaume-Uni</li><li>Suisse</li></country></list><tree><country name="Royaume-Uni"><noRegion><name sortKey="Alexandre, Jean" sort="Alexandre, Jean" uniqKey="Alexandre J" first="Jean" last="Alexandre">Jean Alexandre</name></noRegion><name sortKey="Ellis, John" sort="Ellis, John" uniqKey="Ellis J" first="John" last="Ellis">John Ellis</name><name sortKey="Mavromatos, Nick E" sort="Mavromatos, Nick E" uniqKey="Mavromatos N" first="Nick E." last="Mavromatos">Nick E. Mavromatos</name></country><country name="Suisse"><noRegion><name sortKey="Ellis, John" sort="Ellis, John" uniqKey="Ellis J" first="John" last="Ellis">John Ellis</name></noRegion><name sortKey="Mavromatos, Nick E" sort="Mavromatos, Nick E" uniqKey="Mavromatos N" first="Nick E." last="Mavromatos">Nick E. 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