Tree Level Unitarity Bounds for the Minimal B-L Model

TL;DR

This paper derives unitarity bounds at high energies for the minimal B-L extension of the Standard Model by analyzing Higgs and Goldstone boson scatterings, also exploring energy-dependent variations.

Contribution

It provides the first comprehensive derivation of unitarity bounds in the minimal B-L model considering all relevant two-to-two scatterings at tree level.

Findings

Unitarity bounds are established for the model.

Energy dependence of the bounds is analyzed.

Implications for model parameter space are discussed.

Abstract

We have derived the unitarity bounds in the high energy limit for the minimal B-L extension of the Standard Model by analysing the full class of Higgs and would-be Goldstone boson two-to-two scatterings at tree level. Moreover, we have investigated how these limits could vary at some lower critical value of the energy.