Asymmetric Higgs Sector and Neutrino Mass in an SU(2)_R Model

TL;DR

This paper explores a non-supersymmetric left-right symmetric model with an asymmetric Higgs sector, implementing the inverse seesaw mechanism for neutrino masses, and discusses its phenomenological implications and potential observability at the LHC.

Contribution

It introduces a novel asymmetric Higgs sector in a left-right model that naturally incorporates the inverse seesaw mechanism and analyzes flavor-changing neutral Higgs couplings.

Findings

Particles have masses less than 1 TeV.

Flavor-changing neutral Higgs couplings are naturally suppressed.

Model predicts observable signatures at the LHC.

Abstract

The asymmetric Higgs sector of one $SU(2)_L \times SU(2)_R$ bidoublet $(\phi_1^0,\phi_1^-;\phi_2^+,\phi_2^0)$ and one $SU(2)_R$ doublet [but no $SU(2)_L$ doublet] is considered in a nonsupersymmetric left-right extension of the standard model (SM) of particle interactions. The inverse seesaw mechanism for neutrino mass is naturally implemented with the addition of fermion singlets, allowing thereby the possibility of breaking $SU(2)_R$ at the TeV scale. In the limit $v_2 = < \phi_2^0 > = 0$, the unavoidable flavor-changing neutral Higgs couplings to quarks are studied and shown to be naturally suppressed in $K-\bar{K}$ and $B-\bar{B}$ mixing, as well as in $b \to s \gamma$. All particles are consistent with having masses less than 1 TeV, and could be observable at the Large Hadron Collider (LHC).