Probing CP-violating Higgs-gauge Boson Couplings at Future Muon Collider
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arXiv
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| author | Gurkanli, Emre Spor, Serdar |
| author_facet | Gurkanli, Emre Spor, Serdar |
| contents | We explore the sensitivity of future muon colliders to CP-violating interactions in the Higgs sector, specifically focusing on the process $μ^- μ^+ \to h \bar{ν_{l}} ν_{l} \to b\bar{b} \bar{ν_{l}}ν_{l}$. Using a model-independent approach within the framework of the Standard Model Effective Field Theory (SMEFT), we analyze the contribution of dimension-six operators to Higgs-gauge boson couplings, emphasizing CP-violating effects. To simulate the process, all signal and background events are generated through MadGraph. The analysis provides 95\% confidence level limits on the relevant Wilson coefficients $\tilde{c}_{HB}$, $\tilde{c}_{HW}$, $\tilde{c}_γ$, with a comparative discussion of existing experimental and phenomenological constraints. Our best constraints on the $\tilde{c}_{HB}$, $\tilde{c}_{HW}$, $\tilde{c}_γ$ with an integrated luminosity of 10 ab$^{-1}$ are $[-0.017428;0.018991]$, $[-0.002880;0.002586]$ and $[-0.010784;0.011381]$, respectively. In this context, this study highlights the capability of future muon collider experiments to probe new physics in the Higgs sector, potentially offering tighter constraints on CP-violating Higgs-gauge boson interactions than those provided by current colliders. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2411_04565 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Probing CP-violating Higgs-gauge Boson Couplings at Future Muon Collider Gurkanli, Emre Spor, Serdar High Energy Physics - Phenomenology We explore the sensitivity of future muon colliders to CP-violating interactions in the Higgs sector, specifically focusing on the process $μ^- μ^+ \to h \bar{ν_{l}} ν_{l} \to b\bar{b} \bar{ν_{l}}ν_{l}$. Using a model-independent approach within the framework of the Standard Model Effective Field Theory (SMEFT), we analyze the contribution of dimension-six operators to Higgs-gauge boson couplings, emphasizing CP-violating effects. To simulate the process, all signal and background events are generated through MadGraph. The analysis provides 95\% confidence level limits on the relevant Wilson coefficients $\tilde{c}_{HB}$, $\tilde{c}_{HW}$, $\tilde{c}_γ$, with a comparative discussion of existing experimental and phenomenological constraints. Our best constraints on the $\tilde{c}_{HB}$, $\tilde{c}_{HW}$, $\tilde{c}_γ$ with an integrated luminosity of 10 ab$^{-1}$ are $[-0.017428;0.018991]$, $[-0.002880;0.002586]$ and $[-0.010784;0.011381]$, respectively. In this context, this study highlights the capability of future muon collider experiments to probe new physics in the Higgs sector, potentially offering tighter constraints on CP-violating Higgs-gauge boson interactions than those provided by current colliders. |
| title | Probing CP-violating Higgs-gauge Boson Couplings at Future Muon Collider |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2411.04565 |