The Higgs boson decay $h \rightarrow bs$ in the $U(1)_X$SSM

TL;DR

This paper investigates the flavor-violating decay of the Higgs boson into a bottom and strange quark pair within the $U(1)_X$SSM, revealing potential deviations from the Standard Model predictions due to new model parameters.

Contribution

It provides a detailed analysis of the $h ightarrow bs$ decay in the $U(1)_X$SSM, highlighting how new parameters can significantly alter decay rates compared to the SM.

Findings

Branching ratio of $h ightarrow bs$ can significantly differ from SM expectations.

New parameters in $U(1)_X$SSM influence flavor violation mechanisms.

Guidance for experimental searches for new physics via Higgs decays.

Abstract

In the $U(1)_X$SSM, we delve into the flavor violation of $h \rightarrow bs$, where $h$ is identified with the SM-like Higgs boson discovered at the LHC. As the U(1) extension of the minimal supersymmetric standard model (MSSM), the U(1)XSSM has new super fields such as right-handed neutrinos and three Higgs singlets. We conduct a thorough analysis of the underlying mechanisms and parameter dependencies of $h \rightarrow bs$ in the $U(1)_X$SSM. In the $U(1)_X$SSM, we discover that the Br$(h \rightarrow bs)$ for the Higgs decay to $bs$ could significantly differ from the expectation in the standard model (SM), depending on the values of the new parameters introduced in the model. Our research not only contributes to a deeper understanding of Higgs physics within the $U(1)_X$SSM, but also provides valuable guidance for new physics (NP).