New Contributions to \(b \to s \gamma \) in Minimal G2HDM

We study the flavor-changing bottom quark radiative decay \(b \to s \gamma\) induced at one-loop level within the minimal gauged two-Higgs-doublet model (G2HDM). Among the three new contributions to this rare process in G2HDM, we find that only the charged Higgs \(\mathcal{H^\pm}\) contribution can...

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Bibliographic Details
Published in:arXiv.org 2024-04
Main Authors: Che Hao Liu, Van Que Tran, Wen, Qiaoyi, Xu, Fanrong, Tzu-Chiang Yuan
Format: Article
Language:English
Subjects:
Confidence intervals
Constraints
Dark matter
Online Access:Get full text
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Summary:We study the flavor-changing bottom quark radiative decay \(b \to s \gamma\) induced at one-loop level within the minimal gauged two-Higgs-doublet model (G2HDM). Among the three new contributions to this rare process in G2HDM, we find that only the charged Higgs \(\mathcal{H^\pm}\) contribution can be constrained by the current global fit data in \(B\)-physics. Other two contributions from the complex vectorial dark matter \(\mathcal{W}\) and dark Higgs \(\mathcal{D}\) are not sensitive to the current data. Combining with theoretical constraints imposed on the scalar potential and electroweak precision data for the oblique parameters, we exclude mass regions \(m_{\mathcal{H}^\pm} \lesssim 250\) GeV and \(m_{\mathcal{D}} \lesssim 100\) GeV at the 95\% confidence level.
ISSN:2331-8422