One-loop contributions for $h\rightarrow \ell \bar{\ell}γ$ and $e^-e^+\rightarrow hγ$ in $U(1)_{B-L}$ extension of the standard model
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| Format: | Preprint |
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2023
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| _version_ | 1866916109657047040 |
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| author | Tran, Dzung Tri Nguyen, Thanh Huy Phan, Khiem Hong |
| author_facet | Tran, Dzung Tri Nguyen, Thanh Huy Phan, Khiem Hong |
| contents | We present one-loop contributing for $h\rightarrow \ell \bar{\ell}γ$ with $\ell =ν_{e,μ, τ}, e, μ$ and $e^-e^+\rightarrow hγ$ in $U(1)_{B-L}$ extension of the standard models. In phenomenological results, the signal strengths for $h\rightarrow \ell \bar{\ell}γ$ at Large Hadron Collider and for $e^-e^+\rightarrow hγ$ at future Lepton Colliders are analyzed in physical parameter space for both vector and chiral $B-L$ models. We find that the contributions from neutral gauge boson $Z'$ to the signal strengths are rather small. Consequently, the effects are hard to probe at future colliders. While the impacts of charged Higgs, CP-odd Higgs in the chiral $B-L$ model on the signal strengths are significant and can be measured with the help of the initial polarization beams at future lepton colliders. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2311_02998 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | One-loop contributions for $h\rightarrow \ell \bar{\ell}γ$ and $e^-e^+\rightarrow hγ$ in $U(1)_{B-L}$ extension of the standard model Tran, Dzung Tri Nguyen, Thanh Huy Phan, Khiem Hong High Energy Physics - Phenomenology We present one-loop contributing for $h\rightarrow \ell \bar{\ell}γ$ with $\ell =ν_{e,μ, τ}, e, μ$ and $e^-e^+\rightarrow hγ$ in $U(1)_{B-L}$ extension of the standard models. In phenomenological results, the signal strengths for $h\rightarrow \ell \bar{\ell}γ$ at Large Hadron Collider and for $e^-e^+\rightarrow hγ$ at future Lepton Colliders are analyzed in physical parameter space for both vector and chiral $B-L$ models. We find that the contributions from neutral gauge boson $Z'$ to the signal strengths are rather small. Consequently, the effects are hard to probe at future colliders. While the impacts of charged Higgs, CP-odd Higgs in the chiral $B-L$ model on the signal strengths are significant and can be measured with the help of the initial polarization beams at future lepton colliders. |
| title | One-loop contributions for $h\rightarrow \ell \bar{\ell}γ$ and $e^-e^+\rightarrow hγ$ in $U(1)_{B-L}$ extension of the standard model |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2311.02998 |