The price of neutrino superluminality continues to rise
Identifieur interne : 000080 ( PascalFrancis/Corpus ); précédent : 000079; suivant : 000081The price of neutrino superluminality continues to rise
Auteurs : Arthur Hebecker ; Alexander KnochelSource :
- Physics letters. Section B [ 0370-2693 ] ; 2012.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
We revisit the model building challenges that one faces when trying to reconcile the OPERA claim of neutrino superluminality with other observational constraints. The severity of the supernova bound and of the kinematical constraints of Cohen-Glashow type lead us to focus on scenarios where all types of particles are superluminal inside matter. In contrast to the Dvali-Vikman proposal, this matter effect needs to be very short-ranged to avoid constraints from experiments on the Earth's surface in low-density environments. Due to this short range, the interaction underlying such a matter effect would have to be far stronger than permitted by fifth-force bounds. As a conceivable way out we suggest to make the matter effect "binary", i.e., dense matter does not directly trigger superluminality, but merely induces the transition to a different phase of some weakly coupled hidden sector. This phase exhibits spontaneous Lorentz violation or at least a stronger than usual mediation of some residual Lorentz violation to all matter. The effect has not been observed before since we have never before been able to measure the velocity of high-energy particles in dense matter with sufficient precision.
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Pour connaître la documentation sur le format Inist Standard.
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Format Inist (serveur)
NO : | PASCAL 12-0350354 INIST |
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ET : | The price of neutrino superluminality continues to rise |
AU : | HEBECKER (Arthur); KNOCHEL (Alexander) |
AF : | Institut für Theoretische Physik, Philosophenweg 19/69120 Heidelberg/Allemagne (1 aut., 2 aut.) |
DT : | Publication en série; Niveau analytique |
SO : | Physics letters. Section B; ISSN 0370-2693; Coden PYLBAJ; Royaume-Uni; Da. 2012; Vol. 715; No. 1-3; Pp. 116-120; Bibl. 48 ref. |
LA : | Anglais |
EA : | We revisit the model building challenges that one faces when trying to reconcile the OPERA claim of neutrino superluminality with other observational constraints. The severity of the supernova bound and of the kinematical constraints of Cohen-Glashow type lead us to focus on scenarios where all types of particles are superluminal inside matter. In contrast to the Dvali-Vikman proposal, this matter effect needs to be very short-ranged to avoid constraints from experiments on the Earth's surface in low-density environments. Due to this short range, the interaction underlying such a matter effect would have to be far stronger than permitted by fifth-force bounds. As a conceivable way out we suggest to make the matter effect "binary", i.e., dense matter does not directly trigger superluminality, but merely induces the transition to a different phase of some weakly coupled hidden sector. This phase exhibits spontaneous Lorentz violation or at least a stronger than usual mediation of some residual Lorentz violation to all matter. The effect has not been observed before since we have never before been able to measure the velocity of high-energy particles in dense matter with sufficient precision. |
CC : | 001B00; 001B20; 001B10 |
FD : | Neutrino; Modèle; Supernova; Interaction courte portée; Matière dense; Couplage faible; Violation; Particule sans masse; Particule élémentaire |
ED : | Neutrinos; Models; Supernovae; Short-range interactions; Dense matter; Weak coupling; Violations; Massless particles; Elementary particles |
SD : | Modelo; Materia densa; Acoplamiento débil |
LO : | INIST-9425B.354000508120570150 |
ID : | 12-0350354 |
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Pascal:12-0350354Le document en format XML
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<front><div type="abstract" xml:lang="en">We revisit the model building challenges that one faces when trying to reconcile the OPERA claim of neutrino superluminality with other observational constraints. The severity of the supernova bound and of the kinematical constraints of Cohen-Glashow type lead us to focus on scenarios where all types of particles are superluminal inside matter. In contrast to the Dvali-Vikman proposal, this matter effect needs to be very short-ranged to avoid constraints from experiments on the Earth's surface in low-density environments. Due to this short range, the interaction underlying such a matter effect would have to be far stronger than permitted by fifth-force bounds. As a conceivable way out we suggest to make the matter effect "binary", i.e., dense matter does not directly trigger superluminality, but merely induces the transition to a different phase of some weakly coupled hidden sector. This phase exhibits spontaneous Lorentz violation or at least a stronger than usual mediation of some residual Lorentz violation to all matter. The effect has not been observed before since we have never before been able to measure the velocity of high-energy particles in dense matter with sufficient precision.</div>
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<ET>The price of neutrino superluminality continues to rise</ET>
<AU>HEBECKER (Arthur); KNOCHEL (Alexander)</AU>
<AF>Institut für Theoretische Physik, Philosophenweg 19/69120 Heidelberg/Allemagne (1 aut., 2 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
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<EA>We revisit the model building challenges that one faces when trying to reconcile the OPERA claim of neutrino superluminality with other observational constraints. The severity of the supernova bound and of the kinematical constraints of Cohen-Glashow type lead us to focus on scenarios where all types of particles are superluminal inside matter. In contrast to the Dvali-Vikman proposal, this matter effect needs to be very short-ranged to avoid constraints from experiments on the Earth's surface in low-density environments. Due to this short range, the interaction underlying such a matter effect would have to be far stronger than permitted by fifth-force bounds. As a conceivable way out we suggest to make the matter effect "binary", i.e., dense matter does not directly trigger superluminality, but merely induces the transition to a different phase of some weakly coupled hidden sector. This phase exhibits spontaneous Lorentz violation or at least a stronger than usual mediation of some residual Lorentz violation to all matter. The effect has not been observed before since we have never before been able to measure the velocity of high-energy particles in dense matter with sufficient precision.</EA>
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