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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/2410.23685 |
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| _version_ | 1866910797067714560 |
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| author | Hasan, Usman Uzair, A. Junaid, M. Tariq, Bilal Ahmed, Ishtiaq Iqbal, Shahin |
| author_facet | Hasan, Usman Uzair, A. Junaid, M. Tariq, Bilal Ahmed, Ishtiaq Iqbal, Shahin |
| contents | The rare three body decay of a Higgs boson to a lepton-anti lepton pair and a photon has begun to attract attention, after the first evidence for the $H\to Zγ$ at CMS and ATLAS, which is a sub process of $H \to \ell^+ \ell^- γ$ . To investigate some important features of this process, we suggest that the polarized forward-backward and the photon polarization asymmetries could be useful to probe its important properties, such as the behavior of Yukawa coupling, resonance, and non-resonance contributions. Our analysis introduces a comprehensive framework to evaluate the aforementioned polarization-dependent observables. By analyzing the polarization effects of the final-state photon and lepton separately on forward-backward asymmetries, we demonstrate that loop-induced contributions play a significant role to investigate these asymmetries. Unlike the unpolarized case, where the interference effects of resonance and non-resonance effects are minimal, we show that polarization dependent observables offer a powerful tool to analyze these features of this decay mode. Furthermore, these observables can provide a handy tool for probing possible signatures of physics beyond the SM. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_23685 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Polarization-dependent observables in $H\to \ell^{+}\ell^{-} γ$ in the SM Hasan, Usman Uzair, A. Junaid, M. Tariq, Bilal Ahmed, Ishtiaq Iqbal, Shahin High Energy Physics - Phenomenology The rare three body decay of a Higgs boson to a lepton-anti lepton pair and a photon has begun to attract attention, after the first evidence for the $H\to Zγ$ at CMS and ATLAS, which is a sub process of $H \to \ell^+ \ell^- γ$ . To investigate some important features of this process, we suggest that the polarized forward-backward and the photon polarization asymmetries could be useful to probe its important properties, such as the behavior of Yukawa coupling, resonance, and non-resonance contributions. Our analysis introduces a comprehensive framework to evaluate the aforementioned polarization-dependent observables. By analyzing the polarization effects of the final-state photon and lepton separately on forward-backward asymmetries, we demonstrate that loop-induced contributions play a significant role to investigate these asymmetries. Unlike the unpolarized case, where the interference effects of resonance and non-resonance effects are minimal, we show that polarization dependent observables offer a powerful tool to analyze these features of this decay mode. Furthermore, these observables can provide a handy tool for probing possible signatures of physics beyond the SM. |
| title | Polarization-dependent observables in $H\to \ell^{+}\ell^{-} γ$ in the SM |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2410.23685 |