Top-quark Yukawa coupling with a dimension-6 operator
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arXiv
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| Format: | Preprint |
| Veröffentlicht: |
2024
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| _version_ | 1866909444291428352 |
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| author | Zheng, Ya-Juan |
| author_facet | Zheng, Ya-Juan |
| contents | We extend the standard top-quark Yukawa coupling with a dimension-6 operator in order to accommodate a CP violating complex phase with manifest gauge invariance. This leads to a new $ttHH$ contact interaction, along with many Goldstone boson couplings. We investigate the impact of the new interactions on a muon collider process $μ^-μ^+\to ν_μ\barν_μt\bar{t}H$ compared with the standard dimension-4 top-Yukawa coupling. The unitarity bounds on the coefficient of the new physics operator is obtained from $W^-_LW^+_L$ and $HH$ initiated processes. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_20921 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Top-quark Yukawa coupling with a dimension-6 operator Zheng, Ya-Juan High Energy Physics - Phenomenology We extend the standard top-quark Yukawa coupling with a dimension-6 operator in order to accommodate a CP violating complex phase with manifest gauge invariance. This leads to a new $ttHH$ contact interaction, along with many Goldstone boson couplings. We investigate the impact of the new interactions on a muon collider process $μ^-μ^+\to ν_μ\barν_μt\bar{t}H$ compared with the standard dimension-4 top-Yukawa coupling. The unitarity bounds on the coefficient of the new physics operator is obtained from $W^-_LW^+_L$ and $HH$ initiated processes. |
| title | Top-quark Yukawa coupling with a dimension-6 operator |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2412.20921 |