Sterile neutrino in a minimal three-generation see-saw model |
| |
| Authors: | Biswajoy Brahmachari Sandhya Choubey Rabindra N. Mohapatra |
| |
| Affiliation: | (1) Saha Institute of Nuclear Physics, 1/AF Bidhan Nagar, 700 064 Kolkata, India;(2) Department of Physics and Astronomy, University of Southampton, SO17 1RJ Highfield, Southampton, UK;(3) Department of Physics and Astronomy, University of Maryland, 20742 College Park, MD, USA;(4) Abdus Salam International Centre for Theoretical Physics, Strada Costiera 11, 34100 Trieste, Italy |
| |
| Abstract: | We investigate symmetries in Dirac and Majorana mass matrices of neutrinos in a three-generation scenario. We show that if we invokeL e +L μ-L τ x S 2R symmetry, one combination of right-handed neutrino states remains massless which can be interpreted as a sterile neutrino. Next we consider a SU2L x U(1)y x U(l)R gauge model and show how higher-dimensional operators can induce mixing between left- and right-handed states which explains solar, atmospheric and LSND experimental results. |
| |
| Keywords: | Sterile neutrino LSND |
| 本文献已被 SpringerLink 等数据库收录！ |
|
