{
  "id": "2105.02688",
  "version": "v1",
  "published": "2021-05-06T14:09:19.000Z",
  "updated": "2021-05-06T14:09:19.000Z",
  "title": "Probing $D^*_{s0}(2317)$ in the decays of $B$ to two charmed mesons",
  "authors": [
    "Zhi-Qing Zhang",
    "Meng-Ge Wang",
    "Yan-Chao Zhao",
    "Zhi-Lin Guan",
    "Na Wang"
  ],
  "comment": "19 pages, 2 figures",
  "categories": [
    "hep-ph",
    "hep-ex"
  ],
  "abstract": "We probe the inner structure of the meson $D^*_{s0}(2317)$ through the decays of $B_{(s)}$ to two charmed mesons within pQCD approach. Assuming $D^*_{s0}(2317)$ as a scalar meson with $\\bar cs$ structure, we find that the predictions for the branching ratios of the decays $B^+\\to D^{*+}_{s0}(2317)\\bar D^{(*)0}, B^0\\to D^{*+}_{s0}(2317)D^{(*)-}$ can explain data within errors. The branching ratios for the decays $B_s\\to D^{*+}_{s0}(2317)D_s^{(*)+}$ are estimated to reach up to $10^{-3}$ order, which can be observed by the present LHCb and SuperKEKB experiments. In this work, the decay constant of the meson $D^*_{s0}(2317)$ is an input parameter. Unfortunately, its value has been studied by many references but with large uncertainties. Our calculation shows that a smaller decay constant of the meson $D^*_{s0}(2317)$ is supported by compared with the present data, say $55\\sim70$ MeV. We also calculate the ratios $R_1=\\frac{Br(B^+\\to D^{*+}_{s0}(2317)\\bar D^0)}{Br(B^+\\to D^{*+}_{s0}(2317)\\bar D^{*0})})$ and $R_2=\\frac{Br(B^0\\to D^{*+}_{s0}(2317)D^-)}{Br(B^0\\to D^{*+}_{s0}(2317)D^{*-})}$, which are valuable to determine the inner structure of $D^*_{s0}(2317)$ by compared with the experimental results. Our predictions for the ratios $R_{1,2}$ are consistent with the present data within errors.We expect that these two ratios can be well measured by the future experiments through improving the measurement accuracy for the decays $B^+\\to D^{*+}_{s0}(2317)\\bar D^{*0}$ and $B^0\\to D^{*+}_{s0}(2317)D^{*-}$.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2021-05-06T14:09:19.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "charmed mesons",
      "inner structure",
      "smaller decay constant",
      "branching ratios",
      "scalar meson"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 19,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}