Constraining a class of B-L extended models from vacuum stability and perturbativity

TL;DR

This paper analyzes B-L extended models, focusing on vacuum stability, triviality, and perturbativity constraints, to refine parameter space considering neutrino mass generation and scalar potential structures.

Contribution

It provides a detailed analysis of scalar potentials in B-L models, deriving stability and perturbativity bounds through renormalization group evolution.

Findings

Constraints on model parameters from vacuum stability

Bounds from triviality and perturbativity

Refined parameter space for B-L models

Abstract

The precise knowledge of the Standard Model Higgs boson and top quark masses and couplings are crucial to understand the physics beyond it. SM like Higgs boson having mass in the range of 123-127 GeV squeezes the parameters for beyond standard model. In recent LHC era many TeV scale neutrino mass models have earned much attention as they pose many interesting phenomenological aspects. We have contemplated B-L extended models which are theoretically well motivated and phenomenologically interesting, and successfully explain neutrino mass generation. In this article we have analysed the detailed structures of the scalar potentials for such models. We have computed the criteria which guarantee that vacuum is bounded from below in all directions. Along with that triviality and perturbativity bounds are also necessitated. Incorporating all such effects we constrain the parameters of such models by performing their renormalization group evolutions.