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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2407.15930 |
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| _version_ | 1866913441644544000 |
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| author | Fei, Yifan Li, Peiran Liu, Zhen Lyu, Kun-Feng Pospelov, Maxim |
| author_facet | Fei, Yifan Li, Peiran Liu, Zhen Lyu, Kun-Feng Pospelov, Maxim |
| contents | We investigate the $W$ boson's exotic decay channel, $W \rightarrow \ell\ell\ell ν$, at the LHC. Although the four-body final states suppress the decay branching ratio, the large production of $W$ bosons makes detecting and precisely measuring this decay probability entirely feasible. Our simulation study indicates that this tiny branching ratio can be measured with sub-percent precision at the HL-LHC. This decay channel can also constrain Standard Model extensions. Using the $ L_μ-L_τ$ model as a benchmark, we find that the current bound on the gauge coupling for $Z'$ mass in the range of $[4,75]$ GeV can significantly improve. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2407_15930 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | $W$-Boson Exotic Decay into Three Charged Leptons at the LHC Fei, Yifan Li, Peiran Liu, Zhen Lyu, Kun-Feng Pospelov, Maxim High Energy Physics - Phenomenology We investigate the $W$ boson's exotic decay channel, $W \rightarrow \ell\ell\ell ν$, at the LHC. Although the four-body final states suppress the decay branching ratio, the large production of $W$ bosons makes detecting and precisely measuring this decay probability entirely feasible. Our simulation study indicates that this tiny branching ratio can be measured with sub-percent precision at the HL-LHC. This decay channel can also constrain Standard Model extensions. Using the $ L_μ-L_τ$ model as a benchmark, we find that the current bound on the gauge coupling for $Z'$ mass in the range of $[4,75]$ GeV can significantly improve. |
| title | $W$-Boson Exotic Decay into Three Charged Leptons at the LHC |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2407.15930 |