Exploring the lepton flavor violating decay modes $b \to s μ^{\pm} τ^{\mp}$ in SMEFT approach
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866909893570592768 |
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| author | Panda, Dhiren Mohapatra, Manas Kumar Mohanta, Rukmani |
| author_facet | Panda, Dhiren Mohapatra, Manas Kumar Mohanta, Rukmani |
| contents | We perform an analysis of the consequences of various new physics operators on the lepton flavor violating (LFV) decay modes mediated through $b \to s \ell _1 \ell _2$ transitions. We scrutinize the imprints of the (pseudo)scalar and axial(vector) operators on the exclusive LFV decay channels $ B_{(s)} \rightarrow (ϕ, K^{*}, K_{2}^{*})\ell_{1}\ell_{2}$ and $Λ_{b}\rightarrow Λ\ell_{1}\ell_{2}$, where $\ell_{1}, \ell_{2}$ represent $μ$ or $τ$. The new physics parameters are constrained by using the upper limits of the branching fractions of the $B \to τμ$ and $B \to K τμ$ processes, assuming the new physics couplings to be real. We then explore the key observables such as the branching fraction, the forward-backward asymmetry, and the longitudinal polarisation fraction of the $B \to (K^*, ϕ, K_2^*) τ^{\pm} μ^{\mp}$ decays. In addition, we also investigate the impact of the new physics couplings on the baryonic $Λ_b \to Λτ^{\pm} μ^{\mp}$ decay channels mediated by the $b \to s$ quark level transition. With the experimental prospects at LHCb upgrade and Belle II, we also predict the upper limits of the above-discussed observables, which could intrigue the new physics search in these channels. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_09393 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Exploring the lepton flavor violating decay modes $b \to s μ^{\pm} τ^{\mp}$ in SMEFT approach Panda, Dhiren Mohapatra, Manas Kumar Mohanta, Rukmani High Energy Physics - Phenomenology We perform an analysis of the consequences of various new physics operators on the lepton flavor violating (LFV) decay modes mediated through $b \to s \ell _1 \ell _2$ transitions. We scrutinize the imprints of the (pseudo)scalar and axial(vector) operators on the exclusive LFV decay channels $ B_{(s)} \rightarrow (ϕ, K^{*}, K_{2}^{*})\ell_{1}\ell_{2}$ and $Λ_{b}\rightarrow Λ\ell_{1}\ell_{2}$, where $\ell_{1}, \ell_{2}$ represent $μ$ or $τ$. The new physics parameters are constrained by using the upper limits of the branching fractions of the $B \to τμ$ and $B \to K τμ$ processes, assuming the new physics couplings to be real. We then explore the key observables such as the branching fraction, the forward-backward asymmetry, and the longitudinal polarisation fraction of the $B \to (K^*, ϕ, K_2^*) τ^{\pm} μ^{\mp}$ decays. In addition, we also investigate the impact of the new physics couplings on the baryonic $Λ_b \to Λτ^{\pm} μ^{\mp}$ decay channels mediated by the $b \to s$ quark level transition. With the experimental prospects at LHCb upgrade and Belle II, we also predict the upper limits of the above-discussed observables, which could intrigue the new physics search in these channels. |
| title | Exploring the lepton flavor violating decay modes $b \to s μ^{\pm} τ^{\mp}$ in SMEFT approach |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2403.09393 |