Probing the general 2HDM with flavor violation through $A \to ZH$
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arXiv
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866915365155504128 |
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| author | Hou, Wei-Shu Krab, Mohamed |
| author_facet | Hou, Wei-Shu Krab, Mohamed |
| contents | We investigate the LHC discovery prospects for a second Higgs doublet through $A \to ZH$ weak decay. The latter is identified as the $\textit{smoking gun signature}$ of two Higgs doublet models (2HDMs) with first-order electroweak (EW) phase transition, a necessary condition for EW baryogenesis. In the general 2HDM (G2HDM) that has flavor-changing neutral Higgs couplings, $H$ may decay dominantly via $t\bar c + \bar tc$ final states, giving rise to trilepton signals. By a phenomenological analysis, we show that $A \to ZH$ in $\ell^+ \ell^- t\bar c$ or $\ell^+ \ell^- \bar t c$ final states could be a promising probe of G2HDM at the LHC with flavor violation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_23133 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Probing the general 2HDM with flavor violation through $A \to ZH$ Hou, Wei-Shu Krab, Mohamed High Energy Physics - Phenomenology We investigate the LHC discovery prospects for a second Higgs doublet through $A \to ZH$ weak decay. The latter is identified as the $\textit{smoking gun signature}$ of two Higgs doublet models (2HDMs) with first-order electroweak (EW) phase transition, a necessary condition for EW baryogenesis. In the general 2HDM (G2HDM) that has flavor-changing neutral Higgs couplings, $H$ may decay dominantly via $t\bar c + \bar tc$ final states, giving rise to trilepton signals. By a phenomenological analysis, we show that $A \to ZH$ in $\ell^+ \ell^- t\bar c$ or $\ell^+ \ell^- \bar t c$ final states could be a promising probe of G2HDM at the LHC with flavor violation. |
| title | Probing the general 2HDM with flavor violation through $A \to ZH$ |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2503.23133 |