{
  "abstract": "Motivated by the recent observation of the $B_c^*$ meson by the ATLAS Collaboration and its promising discovery potential at future high-luminosity colliders, we investigate the semileptonic decays $\\bar{B}^*_{c} \\to (P, V) \\ell^- \\barν_{\\ell}$ ($P=D$, $B_{d,s}$, $η_c(1S,\\,2S,\\,3S)$; $V=D^*$, $B^*_{d,s}$, $ψ(1S,\\,2S,\\,3S)$) in the Standard Model. Using the relevant form factors obtained in the self-consistent covariant light-front quark model, we present theoretical predictions for several physical observables, including the branching fraction, the ratios of branching fractions $R_{(L)}$, the longitudinal polarization fraction of the daughter vector meson, the $τ$ lepton spin asymmetry and the forward-backward asymmetry. It is found that the branching fractions for the Cabibbo-favored $\\bar{B}^*_{c}$ $\\to$ $\\bar{B}^*_{s} e^- \\barν_e$ and $\\bar{B}^*_{s} μ^- \\barν_μ$ decays reach the order of ${\\cal O}(10^{-6})$, which might be firstly observed at the future high-luminosity Large Hadron Collider.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.26379",
  "author_total": 6,
  "authors": [
    {
      "name": "Qin Chang"
    },
    {
      "name": "Jianying Qian"
    },
    {
      "name": "Liting Wang"
    },
    {
      "name": "Xiaolin Wang"
    },
    {
      "name": "Shuai Xu"
    },
    {
      "name": "Jie Zhu"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/37s0w9ky8zvxa.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.26379",
  "fulltext_url": null,
  "id": "37s0w9ky8zvxa",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.26379",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "hep-ph"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2609.26379",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-22",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/37s0w9ky8zvxa.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:23:39Z",
      "native_id": "2609.26379",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.26379"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Semileptonic $\\bar{B}^*_{c} \\to (P, V) \\ell^- \\barν_{\\ell}$ decays within the self-consistent light-front quark model",
  "title_text": "Semileptonic B̅^*_c → (P, V) ℓ^- ν̅_ℓ decays within the self-consistent light-front quark model",
  "type": "preprint",
  "updated_at": "2026-10-30T12:23:39Z",
  "url": "https://research.draconitic.com/paper/37s0w9ky8zvxa",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1103/hbx2-djvf",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}