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arXiv · 2607.24446

Constraints from the SM-like Higgs boson in a flavor-dependent $U(1)$ extension of the Standard Model

Duong Van Loi·N. T. Duy
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Abstract

This work presents a phenomenological study of the Standard Model-like Higgs boson $H$ in a flavor-dependent $U(1)_X$ extension of the Standard Model, where the $X$ charge is assigned according to fermion flavors. In particular, we analyze the interactions of $H$ with Standard Model particles as well as with new charged scalar bosons. In addition, the parameter $\ka_{\ga}$, which characterizes the $H\to \ga\ga$ decay at the one-loop level, is investigated. The results show that the model predicts $\ka_{\ga}$ values consistent with the ATLAS and CMS constraints at the $1\sigma$ level, while satisfying several bounds derived from flavor, collider and dark matter studies.

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Duong Van Loi, N. T. Duy. 2026-07-27. Constraints from the SM-like Higgs boson in a flavor-dependent $U(1)$ extension of the Standard Model. https://arxiv.org/abs/2607.24446

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