Semileptonic and nonleptonic decays of $B_{u,d,s,c}^{*}$ in the covariant light-front approach
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| Main Authors: | , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866917801808101376 |
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| author | Wang, Si-Yang Yang, You-Ya Sun, Zhi-Jie Yang, Hao Li, Peng Zhang, Zhi-Qing |
| author_facet | Wang, Si-Yang Yang, You-Ya Sun, Zhi-Jie Yang, Hao Li, Peng Zhang, Zhi-Qing |
| contents | The semileptonic and nonleptonic decays of the b-flavor vector mesons $B^{*}_{u,d,s}$ and $B_{c}^{*}$ are investigated within the covariant light-front quark model (CLFQM). By calculating the form factors of the transitions $B_{u, d, s, c}^{*}\to P$ under the CLFQM, with $P$ denoting a pseudoscalar meson, i.e., $π, K, η_c(1S,2S), D_{(s)}, B_{(s)}$, we predict and discuss several physical observables, including the branching ratios, polarization fractions $f_{L}, f_{\|}$, and forward-backward asymmetries $A_{FB}$. The total widths of the single-photon radiative decay channels for these b-flavor vector mesons are estimated using their partial widths.
In these considered decays, one can find that the semileptonic decays $B_{s}^{*0}\to D_{s}^{-}\ell^{\prime+}ν_{\ell^\prime}$ and $B_{c}^{*+}\to B_{s}^{0}\ell^{\prime+}ν_{\ell^\prime}, η_{c}\ell^{\prime+}ν_{\ell^\prime}$, with $\ell^\prime$ being $e$ or $τ$, and the nonleptonic channels $B_{c}^{*+}\to B^0_{s} π^{+}, B^0_{s} ρ^{+}$ have the largest branching ratios, which can reach up to the $10^{-7}$ order, and are most likely to be accessible at the future high-luminosity LHCb and Belle-II experiments. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2410_09672 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Semileptonic and nonleptonic decays of $B_{u,d,s,c}^{*}$ in the covariant light-front approach Wang, Si-Yang Yang, You-Ya Sun, Zhi-Jie Yang, Hao Li, Peng Zhang, Zhi-Qing High Energy Physics - Phenomenology The semileptonic and nonleptonic decays of the b-flavor vector mesons $B^{*}_{u,d,s}$ and $B_{c}^{*}$ are investigated within the covariant light-front quark model (CLFQM). By calculating the form factors of the transitions $B_{u, d, s, c}^{*}\to P$ under the CLFQM, with $P$ denoting a pseudoscalar meson, i.e., $π, K, η_c(1S,2S), D_{(s)}, B_{(s)}$, we predict and discuss several physical observables, including the branching ratios, polarization fractions $f_{L}, f_{\|}$, and forward-backward asymmetries $A_{FB}$. The total widths of the single-photon radiative decay channels for these b-flavor vector mesons are estimated using their partial widths. In these considered decays, one can find that the semileptonic decays $B_{s}^{*0}\to D_{s}^{-}\ell^{\prime+}ν_{\ell^\prime}$ and $B_{c}^{*+}\to B_{s}^{0}\ell^{\prime+}ν_{\ell^\prime}, η_{c}\ell^{\prime+}ν_{\ell^\prime}$, with $\ell^\prime$ being $e$ or $τ$, and the nonleptonic channels $B_{c}^{*+}\to B^0_{s} π^{+}, B^0_{s} ρ^{+}$ have the largest branching ratios, which can reach up to the $10^{-7}$ order, and are most likely to be accessible at the future high-luminosity LHCb and Belle-II experiments. |
| title | Semileptonic and nonleptonic decays of $B_{u,d,s,c}^{*}$ in the covariant light-front approach |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2410.09672 |