Almost degenerate neutrino mass in an SU(2)qL × SU(2)lL × U(1)Y model

Details Almost degenerate neutrino mass in an SU(2)qL × SU(2)lL × U(1)Y model Almost degenerate neutrino mass in an SU(2)qL × SU(2)lL × U(1)Y model

Feb 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997phlb..398..315g&link_type=abstract

Physics Letters B, v. 398, p. 315-320.

Physics

8

Scientific paper

We have demonstrated that an SU(2)qL × SU(2)lL × U(1)Y model including S3 × Z4 discrete symmetry and appropriate Higgs fields gives rise to almost degenerate Majorona neutrino masses of (1-3) eV through the usual see-saw mechanism due to the introduction of an intermediate mass scale at which lepton number violation occurs. We have considered two different types of discrete symmetry transformations (Type A and Type B). The hierarchy of neutrino mass obtained due to the Type A transformation reconciles with the solar and atmospheric neutrino deficits whereas the Type B transformation generates an inverted mass hierarchy of neutrinos which explains the solar and the LSND experimental results.

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