Lepton Flavor Violation of Z Gauge Boson Decays in Supersymmetric Type-III Seesaw Model
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arXiv
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| Auteurs principaux: | , |
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| Format: | Preprint |
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2025
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| _version_ | 1866917363792740352 |
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| author | Hajahmad, Vael Ali, Murhaf Alsayed |
| author_facet | Hajahmad, Vael Ali, Murhaf Alsayed |
| contents | In this study, we investigate the lepton flavor violation (LFV) of Z gauge boson decaying into two different flavor charged leptons $Z\rightarrow l_i l_j$ ($Z\rightarrow τμ$, $Z\rightarrow τe$ and $Z\rightarrow μe$). This work is performed in the framework of the constrained minimal supersymmetric standard model (CMSSM) which is extended by the type-III seesaw mechanism. By considering constraints from the current experimental bounds on neutrino and supersymmetric particle masses, we calculate the branching ratios of the LFV of $Z$ boson decays. The numerical results are found to be $1.30 \times {10}^{-9}$ for both the $τμ$ and $τe$ decay channels and $6.40 \times {10}^{-10}$ for the $μe$ channel. After applying the constraints from the experimental bounds on the radiative two body decays $l_{i}\rightarrow l_{j} γ$, the branching ratios of the LFV of $Z$ boson decays get an additional suppression of $10^{-3}$ for the $τμ$ and $τe$ decay channels and $10^{-8}$ for the $μe$ channel. Our prediction of the branching ratios is several orders of magnitude below the current experimental bounds. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_15030 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Lepton Flavor Violation of Z Gauge Boson Decays in Supersymmetric Type-III Seesaw Model Hajahmad, Vael Ali, Murhaf Alsayed High Energy Physics - Phenomenology In this study, we investigate the lepton flavor violation (LFV) of Z gauge boson decaying into two different flavor charged leptons $Z\rightarrow l_i l_j$ ($Z\rightarrow τμ$, $Z\rightarrow τe$ and $Z\rightarrow μe$). This work is performed in the framework of the constrained minimal supersymmetric standard model (CMSSM) which is extended by the type-III seesaw mechanism. By considering constraints from the current experimental bounds on neutrino and supersymmetric particle masses, we calculate the branching ratios of the LFV of $Z$ boson decays. The numerical results are found to be $1.30 \times {10}^{-9}$ for both the $τμ$ and $τe$ decay channels and $6.40 \times {10}^{-10}$ for the $μe$ channel. After applying the constraints from the experimental bounds on the radiative two body decays $l_{i}\rightarrow l_{j} γ$, the branching ratios of the LFV of $Z$ boson decays get an additional suppression of $10^{-3}$ for the $τμ$ and $τe$ decay channels and $10^{-8}$ for the $μe$ channel. Our prediction of the branching ratios is several orders of magnitude below the current experimental bounds. |
| title | Lepton Flavor Violation of Z Gauge Boson Decays in Supersymmetric Type-III Seesaw Model |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2503.15030 |