The Hypothesis of Superluminal Neutrinos: comparing OPERA with other Data

Details The Hypothesis of Superluminal Neutrinos: comparing OPERA with other Data The Hypothesis of Superluminal Neutrinos: comparing OPERA with other Data

2011-09-27

arxiv.org/abs/1109.5917v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

v1: 10 pages, 2 figures; v2: 12 pages, 2 figures, improved discussion of CG case as for pion decay and neutrino oscillations,

Scientific paper

The OPERA Collaboration reported evidence for muonic neutrinos traveling slightly faster than light in vacuum. While waiting further checks from the experimental community, here we aim at exploring some theoretical consequences of the hypothesis that muonic neutrinos are superluminal, considering in particular the tachyonic and the Coleman-Glashow cases. We show that a tachyonic interpretation is not only hardly reconciled with OPERA data on energy dependence, but that it clashes with neutrino production from pion and with neutrino oscillations. A Coleman-Glashow superluminal neutrino beam would also have problems with pion decay kinematics for the OPERA setup; it could be easily reconciled with SN1987a data, but then it would be very problematic to account for neutrino oscillations.

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