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| Natura: | Preprint |
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2023
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| Accesso online: | https://arxiv.org/abs/2311.04431 |
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| _version_ | 1866929539190358016 |
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| author | Sun, Zhi-Jie Zhang, Zhi-Qing Yang, You-Ya Yang, Hao |
| author_facet | Sun, Zhi-Jie Zhang, Zhi-Qing Yang, You-Ya Yang, Hao |
| contents | In addition to the strong and electromagnetic decay modes, the $ψ(1S,2S)$ and $η_{c}(1S,2S)$ can also decay via the weak interaction. Such weak decays can be detected by the high-luminosity heavy-flavor experiments. At present, some of the semileptonic and nonleptonic $J/Ψ$ weak decays have been measured at BESIII. Researching for these charmonium weak decays to $D_{(s)}$ meson can provide a platform to check of the standard model (SM) and probe new physics (NP). So we investigate the semileptonic and nonleptonic weak decays of $ψ(1S,2S)$ and $η_{c}(1S,2S)$ to $D_{(s)}$ within the covariant light-front quark model (CLFQM). With form factors of the transitions $ψ(1S,2S)\to D_{(s)}$ and $η_{c}(1S,2S)\to D_{(s)}$ calculated under the CLFQM, we predict and discuss some physical observables, such as the branching ratios, the longitudinal polarizations $f_{L}$ and the forward-backward asymmetries $A_{FB}$. One can find that the Cabibbo-favored semi-leptonic decay channels $ψ(1S,2S)\to D_{s}^{-}\ell^{+}ν_{\ell}$ with $\ell=e,μ$ and the nonleptonic decay modes $ψ(1S,2S)\to D_{s}^{-}ρ^{+}$ have relatively large branching ratios of the order $\mathcal{O}(10^{-9})$, which are most likely to be accessible at the future high-luminosity experiments. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2311_04431 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Semileptonic and nonleptonic weak decays of $ψ(1S,2S)$ and $η_{c}(1S,2S)$ to $D_{(s)}$ in the covariant light-front approach Sun, Zhi-Jie Zhang, Zhi-Qing Yang, You-Ya Yang, Hao High Energy Physics - Phenomenology In addition to the strong and electromagnetic decay modes, the $ψ(1S,2S)$ and $η_{c}(1S,2S)$ can also decay via the weak interaction. Such weak decays can be detected by the high-luminosity heavy-flavor experiments. At present, some of the semileptonic and nonleptonic $J/Ψ$ weak decays have been measured at BESIII. Researching for these charmonium weak decays to $D_{(s)}$ meson can provide a platform to check of the standard model (SM) and probe new physics (NP). So we investigate the semileptonic and nonleptonic weak decays of $ψ(1S,2S)$ and $η_{c}(1S,2S)$ to $D_{(s)}$ within the covariant light-front quark model (CLFQM). With form factors of the transitions $ψ(1S,2S)\to D_{(s)}$ and $η_{c}(1S,2S)\to D_{(s)}$ calculated under the CLFQM, we predict and discuss some physical observables, such as the branching ratios, the longitudinal polarizations $f_{L}$ and the forward-backward asymmetries $A_{FB}$. One can find that the Cabibbo-favored semi-leptonic decay channels $ψ(1S,2S)\to D_{s}^{-}\ell^{+}ν_{\ell}$ with $\ell=e,μ$ and the nonleptonic decay modes $ψ(1S,2S)\to D_{s}^{-}ρ^{+}$ have relatively large branching ratios of the order $\mathcal{O}(10^{-9})$, which are most likely to be accessible at the future high-luminosity experiments. |
| title | Semileptonic and nonleptonic weak decays of $ψ(1S,2S)$ and $η_{c}(1S,2S)$ to $D_{(s)}$ in the covariant light-front approach |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2311.04431 |