The Status of Neutrino Mass

Details The Status of Neutrino Mass The Status of Neutrino Mass

1998-04-23

arxiv.org/abs/hep-ph/9804367v1

Int.J.Mod.Phys. A13 (1998) 4409-4424

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 4 figures, LaTex To be published in Cosmo'97 conference proceedings

Scientific paper

10.1142/S0217751X98002122

New experimental results, if correct, require at least one light sterile neutrino, in addition to the three active ones, to accommodate the mass differences required to explain the solar $\nu_e$ deficit, the anomalous $\nu/e$ ratio produced by atmospheric neutrinos, and either the candidate events for $\nu_\mu\to\nu_e$ (or $\bar\nu_\mu\to\bar\nu_e$) from the LSND experiment, or the possible need for a hot component of dark matter. This neutrino mass pattern can not only accommodate all these four requirements, but also provide a robust solution to a problem presently making heavy-element synthesis by supernovae impossible and resolve a possible discrepancy between big bang nucleosynthesis theory and observations.

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