Abstract

Current experiments do not exclude the possibility that one or more neutrinos are very slightly superluminal or that they have a very small tachyonic mass. Important bounds on the size of a hypothetical tachyonic neutrino mass term are set by lepton pair Čerenkov radiation (LPCR), that is, by the decay channel → e+ e- , which proceeds via a virtual Z0 boson. Here, we use a Lorentz-invariant dispersion relation which leads to very tight constraints on the tachyonic mass of neutrinos; we also calculate decay and energy loss rates. A possible cutoff seen in the IceCube neutrino spectrum for Ev > 2 PeV, due to the potential onset of LPCR, is discussed.

Department(s)

Physics

International Standard Serial Number (ISSN)

1687-7357

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 2016 Hindawi Publishing Corporation, All rights reserved.

Included in

Physics Commons

Share

 
COinS