The purely leptonic and semileptonic decays of $D^{*}_{s}$ meson
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| Autores principales: | , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866909917609197568 |
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| author | Wang, Xiao-Lin Sun, Rui Wang, Li-Ting |
| author_facet | Wang, Xiao-Lin Sun, Rui Wang, Li-Ting |
| contents | With the potential prospects of the $D^{*}_{s}$ at high-luminosity heavy-flavor experiments in the future, we investigated the CKM-favored and tree-dominated leptonic $D^{*}_{s}\to\ell\barν_{\ell}$ and semileptonic $D^{*}_{s}\to M\ell\barν_{\ell}$ ($M=ϕ, η^{(\prime)}$ and $\ell=e, μ$) weak decays in the Standard Model (SM). The theoretical predictions and some discussions for the observable quantities including the total width of $D^{*}_{s}$ mesons, the branching fractions of leptonic $D^{*}_{s}\to\ell\barν_{\ell}$ and semileptonic $D^{*}_{s}\to M\ell\barν_{\ell}$ weak decays, the lepton spin asymmetry and forward-backward asymmetry are presented. Numerically, the weak decays of $D^{*}_{s}\to\ell\barν_{\ell}$ and $D^{*}_{s} \to M\ell\barν_{\ell}$ have relatively large branching fractions of the order $\mathcal{O}(10^{-5})$ and $\mathcal{O}(10^{-7})$ respectively, which are expected to be observed in future experiments. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_18033 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | The purely leptonic and semileptonic decays of $D^{*}_{s}$ meson Wang, Xiao-Lin Sun, Rui Wang, Li-Ting High Energy Physics - Phenomenology With the potential prospects of the $D^{*}_{s}$ at high-luminosity heavy-flavor experiments in the future, we investigated the CKM-favored and tree-dominated leptonic $D^{*}_{s}\to\ell\barν_{\ell}$ and semileptonic $D^{*}_{s}\to M\ell\barν_{\ell}$ ($M=ϕ, η^{(\prime)}$ and $\ell=e, μ$) weak decays in the Standard Model (SM). The theoretical predictions and some discussions for the observable quantities including the total width of $D^{*}_{s}$ mesons, the branching fractions of leptonic $D^{*}_{s}\to\ell\barν_{\ell}$ and semileptonic $D^{*}_{s}\to M\ell\barν_{\ell}$ weak decays, the lepton spin asymmetry and forward-backward asymmetry are presented. Numerically, the weak decays of $D^{*}_{s}\to\ell\barν_{\ell}$ and $D^{*}_{s} \to M\ell\barν_{\ell}$ have relatively large branching fractions of the order $\mathcal{O}(10^{-5})$ and $\mathcal{O}(10^{-7})$ respectively, which are expected to be observed in future experiments. |
| title | The purely leptonic and semileptonic decays of $D^{*}_{s}$ meson |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2511.18033 |