Enhanced di-photon Higgs signal in the Next-to-Minimal Supersymmetric Standard Model

TL;DR

This paper explores how the Next-to-Minimal Supersymmetric Standard Model can produce a significantly enhanced di-photon Higgs signal at colliders due to unique Higgs decay properties.

Contribution

It demonstrates the potential for large di-photon Higgs signals in NMSSM, highlighting scenarios with increased detectability at colliders.

Findings

Higgs bosons with 80-110 GeV mass can have enhanced di-photon decay rates.

Branching ratio into two photons can be up to 10 times that of the SM Higgs.

Signal rate can be increased by a factor of 6 in collider experiments.

Abstract

In the Next-to-Minimal Supersymmetric Standard Model, CP-even Higgs bosons can have masses in the range of 80-110 GeV in agreement with constraints from LEP due to their sizeable singlet component. Nevertheless their branching ratio into two photons can be 10 times larger than the one of a Standard Model Higgs boson of similar mass due to a reduced coupling to b quarks. This can lead to a spectacular enhancement of the Higgs signal rate in the di-photon channel at hadron colliders by a factor 6. Corresponding scenarios can occur in the Next-to-Minimal Supersymmetric Standard Model for a relatively low Susy breaking scale.