LSND anomaly from CPT violation in four-neutrino models

Details LSND anomaly from CPT violation in four-neutrino models LSND anomaly from CPT violation in four-neutrino models

2003-08-28

arxiv.org/abs/hep-ph/0308299v1

Phys.Lett.B576:303-308,2003

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 3 figures

Scientific paper

10.1016/j.physletb.2003.10.004

The LSND signal for \bar\nu_\mu to \bar\nu_e oscillations has prompted supposition that there may be a fourth light neutrino or that CPT is violated. Neither explanation provides a good fit to all existing neutrino data. We examine the even more speculative possibility that a four-neutrino model with CPT violation can explain the LSND effect and remain consistent with all other data. We find that models with a 3+1 mass structure in the neutrino sector are viable; a 2+2 structure is permitted only in the antineutrino sector.

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