$W$-Boson Exotic Decay into Three Charged Leptons at the LHC
| Autor: | Fei, Yifan, Li, Peiran, Liu, Zhen, Lyu, Kun-Feng, Pospelov, Maxim |
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| Rok vydání: | 2024 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | We investigate the $W$ boson's exotic decay channel, $W \rightarrow \ell\ell\ell \nu$, 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_\mu-L_\tau$ 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. Comment: 9 pages, 6 figures, 3 tables |
| Databáze: | arXiv |
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