The Higgs sector of the minimal SUSY $B-L$ model

TL;DR

This paper reviews the Higgs sector of the minimal SUSY B-L model, emphasizing the role of gauge kinetic mixing, the presence of two light Higgs bosons, and the implications for phenomenology including decay channels and coupling modifications.

Contribution

It highlights the impact of gauge kinetic mixing on Higgs phenomenology and explores new decay channels and model features affecting phenomenological predictions.

Findings

Two light Higgs bosons, MSSM-like and B-L-like, mix at one loop due to gauge mixing.

Gauge kinetic mixing significantly influences Higgs decay channels and couplings.

Model features affect R-Parity conservation and Higgs-to-diphoton coupling.

Abstract

I review the Higgs sector of the $U(1)_{B-L}$ extension of the minimal supersymmetric standard model (MSSM). I will show that the gauge kinetic mixing plays a crucial role in the Higgs phenomenology. Two light bosons are present, a MSSM-like one and a $B-L$-like one, that mix at one loop solely due to the gauge mixing. After briefly looking at constraints from flavour observables, new decay channels involving right-handed (s)neutrinos are presented. Finally, it will be reviewed how model features pertaining to the gauge extension affect the model phenomenology, concerning the existence of R-Parity-conserving minima at loop level and the Higgs-to-diphoton coupling.