Form invariance and symmetry in the neutrino mass matrix
Lashin, E.I.; S. Nasri; E. Malkawi; N. Chamoun;
Abstract
We present the general form of the unitary matrices keeping invariant the
Majorana neutrino mass matrix of specific texture suitable for explaining
oscillation data. In the case of the Tri-bimaximal pattern with two degenerate
masses we give a specific realization of the underlying $U(1)$ symmetry which
can be uplifted to a symmetry in a complete theory including charged leptons.
For this, we present a model with three light SM-like
Higgs doublets and one heavy Higgs triplet and find that one can accommodate
the hierarchy of the charged lepton masses. The lepton mass spectrum can also
be achieved in another model extending the SM with three SM-singlet scalars
transforming non trivially under the flavor symmetry. We discuss how such a
model has room for generating enough baryon asymmetry through leptogenesis in
the framework of Type-I and II seesaw mechanisms.
Majorana neutrino mass matrix of specific texture suitable for explaining
oscillation data. In the case of the Tri-bimaximal pattern with two degenerate
masses we give a specific realization of the underlying $U(1)$ symmetry which
can be uplifted to a symmetry in a complete theory including charged leptons.
For this, we present a model with three light SM-like
Higgs doublets and one heavy Higgs triplet and find that one can accommodate
the hierarchy of the charged lepton masses. The lepton mass spectrum can also
be achieved in another model extending the SM with three SM-singlet scalars
transforming non trivially under the flavor symmetry. We discuss how such a
model has room for generating enough baryon asymmetry through leptogenesis in
the framework of Type-I and II seesaw mechanisms.
Other data
Title | Form invariance and symmetry in the neutrino mass matrix | Authors | Lashin, E.I. ; S. Nasri ; E. Malkawi ; N. Chamoun | Keywords | High Energy Physics - Phenomenology | Issue Date | 2011 | Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology | DOI | 10.1103/PhysRevD.83.013002 | Scopus ID | 2-s2.0-79551548937 |
Recommend this item
Similar Items from Core Recommender Database
Items in Ain Shams Scholar are protected by copyright, with all rights reserved, unless otherwise indicated.