New Contributions to $b \to s γ$ in Minimal G2HDM
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arXiv
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| Autori principali: | , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866914017514094592 |
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| author | Liu, Che Hao Tran, Van Que Wen, Qiaoyi Xu, Fanrong Yuan, Tzu-Chiang |
| author_facet | Liu, Che Hao Tran, Van Que Wen, Qiaoyi Xu, Fanrong Yuan, Tzu-Chiang |
| contents | We study the flavor-changing bottom quark radiative decay $b \to s γ$ 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_06397 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | New Contributions to $b \to s γ$ in Minimal G2HDM Liu, Che Hao Tran, Van Que Wen, Qiaoyi Xu, Fanrong Yuan, Tzu-Chiang High Energy Physics - Phenomenology We study the flavor-changing bottom quark radiative decay $b \to s γ$ 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. |
| title | New Contributions to $b \to s γ$ in Minimal G2HDM |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2404.06397 |