\begin{document}$ b {\rightarrow} s \gamma $\end{document} induced at the one-loop level within the minimal gauged two-Higgs-doublet model (G2HDM). Among the three new contributions to this rare process in G2HDM, we find that only the charged Higgs \begin{document}$ {\cal{H}}^\pm $\end{document} contribution can be constrained by the current global fit data in B-physics. The other two contributions from complex vectorial dark matter \begin{document}$ {\cal{W}} $\end{document} and dark Higgs \begin{document}$ {\cal{D}} $\end{document} are not sensitive to the current data. Incorporating theoretical constraints imposed on the scalar potential and electroweak precision data for the oblique parameters, we exclude mass regions \begin{document}$ m_{\cal{H}}^\pm \lesssim 250 $\end{document} GeV and \begin{document}$ m_{\cal{D}} \lesssim 100 $\end{document} GeV at the 95% confidence level."> New contributions to <i>b</i> → <i>sγ</i> in the minimal G2HDM -
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