Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1998-03-10
Phys.Lett. B430 (1998) 296-302
Physics
High Energy Physics
High Energy Physics - Phenomenology
15 pages Latex, One figure, OSU-HEP-98-2; UMD-PP-98-98
Scientific paper
10.1016/S0370-2693(98)00532-2
It has been observed that simultaneous explanation of the solar and atmospheric neutrino deficits and the reported evidence for $\nu_{\mu}\to \nu_{e}$ oscillation from the Los Alamos Liquid Scintillator Detector (LSND) requires at least one extra neutrino species in addition to the three known ones. The extra neutrino must be sterile with respect to the known weak interactions. We present a new mass matrix for these four neutrinos in which the LSND effect and the atmospheric neutrino deficit are governed by only one parameter. We investigate the phenomenological implications of such a mass matrix ansatz and suggest possible ways to understand it in gauge theories.
Gibbons S. C.
Mohapatra Rabindra N.
Nandi Satyanarayan
Raychaudhuri Amitava
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