Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2001-10-17
Phys.Lett. B522 (2001) 287-296
Physics
High Energy Physics
High Energy Physics - Phenomenology
13 pages, RevTeX
Scientific paper
10.1016/S0370-2693(01)01315-6
Recent results from SuperKamiokande and SNO experiments have set severe constraints on possible mixings of a light sterile neutrino, \nu_s, with the three active species required for a simultaneous explanation of the solar, atmospheric and LSND neutrino oscillation data. A consistent scheme has emerged from a global analysis of the data wherein two of the neutrinos are nearly degenerate with a mass of order 1 eV, that mix significantly with the two lighter states. We present realizations of such a mixed 2+2 oscillation scenario based on L_e + L_\mu - L_\tau - L_s symmetry (L_i stands for the ith lepton number). Breaking of of this lepton number symmetry by a small mass term for \nu_s leads to the required large mixings for both the atmospheric and the solar neutrino oscillations. Sum rules for the neutrino oscillation parameters are derived within this scheme, and are shown to be consistent with present data. These models predict U_{e3} = 0.02-0.03, which can serve as a test of this idea. We also present gauge models based on mirror extensions of the Standard Model that naturally lead to a light sterile neutrino with the required mixing pattern.
Babu K. S.
Mohapatra Rabindra N.
No associations
LandOfFree
L_e + L_μ- L_τ- L_s Symmetry and a Mixed 2+2 Scenario for Neutrino Oscillations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with L_e + L_μ- L_τ- L_s Symmetry and a Mixed 2+2 Scenario for Neutrino Oscillations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and L_e + L_μ- L_τ- L_s Symmetry and a Mixed 2+2 Scenario for Neutrino Oscillations will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-347728