Enhancement of the Higgs decay into a $Z^\prime$ pair in models with $U(1)_X$ gauge symmetry
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arXiv
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| Hauptverfasser: | , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866911954343297024 |
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| author | A., ShivaSankar K. Das, Arindam Yagyu, Kei |
| author_facet | A., ShivaSankar K. Das, Arindam Yagyu, Kei |
| contents | We discuss the Higgs phenomenology in models with a new $U(1)_X$ gauge symmetry including the $U(1)_{B-L}$ scenario, where three right-handed neutrinos are inevitably introduced due to the gauge anomaly cancellations. We find that the decay branching ratio of the discovered Higgs boson into a pair of new massive gauge bosons ($Z'$) can significantly be enhanced in the Dirac neutrino case as compared with the Majorana case for a fixed value of the new gauge coupling and the mass of $Z'$ under constraints from current experimental data. Because of such an enhancement, the Dirac case can indirectly be discriminated from the Majorana case via the Higgs decay. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_00392 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Enhancement of the Higgs decay into a $Z^\prime$ pair in models with $U(1)_X$ gauge symmetry A., ShivaSankar K. Das, Arindam Yagyu, Kei High Energy Physics - Phenomenology High Energy Physics - Experiment We discuss the Higgs phenomenology in models with a new $U(1)_X$ gauge symmetry including the $U(1)_{B-L}$ scenario, where three right-handed neutrinos are inevitably introduced due to the gauge anomaly cancellations. We find that the decay branching ratio of the discovered Higgs boson into a pair of new massive gauge bosons ($Z'$) can significantly be enhanced in the Dirac neutrino case as compared with the Majorana case for a fixed value of the new gauge coupling and the mass of $Z'$ under constraints from current experimental data. Because of such an enhancement, the Dirac case can indirectly be discriminated from the Majorana case via the Higgs decay. |
| title | Enhancement of the Higgs decay into a $Z^\prime$ pair in models with $U(1)_X$ gauge symmetry |
| topic | High Energy Physics - Phenomenology High Energy Physics - Experiment |
| url | https://arxiv.org/abs/2402.00392 |