{
  "id": "2409.07302",
  "version": "v1",
  "published": "2024-09-11T14:33:30.000Z",
  "updated": "2024-09-11T14:33:30.000Z",
  "title": "Possibility of the experimental study on semi-leptonic and non-leptonic $D^*_{(s)}$ weak decays",
  "authors": [
    "Hao Yang",
    "Zhi-Qing Zhang",
    "Peng Li",
    "You-Ya Yang"
  ],
  "comment": "23 pages, 4 figures. arXiv admin note: text overlap with arXiv:2311.04431",
  "categories": [
    "hep-ph"
  ],
  "abstract": "Just like other heavy flavor mesons, the weak decays of $D^*_{(s)}$ mesons can also provide a platform to check the Standard Model (SM), explore new physics (NP) and understand the mechanisms of weak interactions. At present, the theoretical and experimental researches on $D^*_{(s)}$ mesons are relatively limited. In addition to the dominant electromagnetic decays, the $D^*_{(s)}$ weak decays should also be feasible to explore the $D^*_{(s)}$ mesons. In this paper, we use the covariant light-front quark model (CLFQM) to study the branching ratios of the semi-leptonic decays $D^*_{(s)}\\to P\\ell^{+}\\nu_{\\ell}$ and the non-leptonic decays $D^*_{(s)}\\to PP, PV$ with $P=\\pi, K, \\eta^{(\\prime)}, V=\\rho, K^*, \\phi$ and $\\ell=e, \\mu$, which are within the range $10^{-13}\\sim 10^{-6}$. Among these decays, the channels $D_{s}^{*+}\\to\\eta \\ell^{+}\\nu_{\\ell}$ and $D^{*+}_{s}\\to \\eta\\rho^{+}$ possess the largest branching ratios, which can reach up to $10^{-6}$ order. These decays are most likely to be accessible at the future high-luminosity experiments. One can find that the branching ratios $\\mathcal{B}r(D_{s}^{*+}\\to\\eta \\ell^{+}\\nu_{\\ell})=1.46\\times10^{-6}$ and $\\mathcal{B}r(D_{s}^{*+}\\to\\eta \\rho^{+})=1.04\\times10^{-6}$ correspond to tens of thousands of events in the $e^+e^-$ collider experiments, such as the STCF, CEPC and FCC-ee, and tens of millions of events at the HL-LHC. In a word, it is feasible to study the $D^*_{(s)}$ meson weak decays in the future experiments. Furthermore, we also predict and discuss another two physical observations, that is, the longitudinal polarization fraction $f_{L}$ and the forward-backward asymmetry $A_{FB}$, for our considered decays.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2024-09-11T14:33:30.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "experimental study",
      "semi-leptonic",
      "non-leptonic",
      "branching ratios",
      "possibility"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 23,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}