Superluminal neutrinos at OPERA confront pion decay kinematics.
Identifieur interne : 000A59 ( Main/Exploration ); précédent : 000A58; suivant : 000A60Superluminal neutrinos at OPERA confront pion decay kinematics.
Auteurs : Ramanath Cowsik [États-Unis] ; Shmuel Nussinov ; Utpal SarkarSource :
- Physical review letters ; 2011.
Abstract
Violation of Lorentz invariance (VLI) has been suggested as an explanation of the superluminal velocities of muon neutrinos reported by OPERA. In this Letter, we show that the amount of VLI required to explain this result poses severe difficulties with the kinematics of the pion decay, extending its lifetime and reducing the momentum carried away by the neutrinos. We show that the OPERA experiment limits α=(ν(ν)-c)/c<4×10(-6). We then take recourse to cosmic-ray data on the spectrum of muons and neutrinos generated in Earth's atmosphere to provide a stronger bound on VLI: (ν-c)/c<10(-12).
DOI: 10.1103/PhysRevLett.107.251801
PubMed: 22243066
Affiliations:
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