Higgs boson decays into {\gamma}{\gamma} and Z{\gamma} in the MSSM and BLSSM

TL;DR

This paper calculates Higgs decay rates into gamma gamma and Z gamma in MSSM and BLSSM, highlighting potential deviations from the Standard Model that can be tested at the LHC, and explores the detectability of a second light scalar Higgs in these models.

Contribution

It provides detailed calculations of Higgs decay modes in MSSM and BLSSM, emphasizing the potential for observable deviations and the detection of additional Higgs signals at the LHC.

Findings

Significant deviations from SM predictions are possible in Higgs decay rates.

A second light scalar Higgs signal can be detected in BLSSM but not in MSSM.

Potential for testing new physics during LHC run 2.

Abstract

We calculate Higgs decay rates into {\gamma}{\gamma} and Z{\gamma} in the Minimal Supersymmetric Standard Model (MSSM) and (B-L) Supersymmetric Standard Model (BLSSM) by allowing for contributions from light staus and charginos. We show that sizable departures are possible from the SM predictions for the 125 GeV state and that they are testable during run 2 at the Large Hadron Collider. Furthermore, we illustrate how a second light scalar Higgs signal in either or both these decay modes can be accessed at the CERN machine rather promptly within the BLSSM, a possibility instead precluded to the MSSM owing to the much larger mass of its heavy scalar state.