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The Higgs boson decay h rightarrow bs in the U(1)_XSSM

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arxiv 2405.16037 v5 pith:BM3HTJFK submitted 2024-05-25 hep-ph

The Higgs boson decay h rightarrow bs in the U(1)_XSSM

classification hep-ph
keywords higgsrightarrowmodelbosondecayphysicsstandardanalysis
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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).

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  1. The Higgs boson decay $h \rightarrow bs$ in the NB-LSSM

    hep-ph 2026-07 conditional novelty 4.0

    Under B̄ o Xsγ constraints, NB-LSSM parameters can raise Br(h o bs) to ~10^{-5}, orders of magnitude above the SM, while remaining consistent with Higgs mass and signal strengths.