{
  "abstract": "We present a systematic study of semileptonic decays of heavy vector mesons within the Hard-Wall AdS/QCD framework. Semileptonic decays provide a clean environment for testing the Standard Model because the leptonic current is well understood, while the hadronic part is encoded in transition form factors that reflect non-perturbative QCD dynamics. The processes under consideration include: \\( ψ\\to D^{*-} ( D^{-} ) \\ell^{+} ν_{\\ell} \\), \\( D^{*0} \\to π^{-} \\ell^{+} ν_{\\ell} \\), \\( D^{*+}_{s} \\to K^{0} \\ell^{+} ν_{\\ell} \\), \\( D^{*0} \\to ρ^{-} \\ell^{+} ν_{\\ell} \\), \\( B_c^{*+} \\to B^{*0} \\ell^{+} ν_{\\ell} \\), \\( B_c^{*+} \\to ψ\\,\\ell^{+} ν_{\\ell} \\), \\( B^{*-} \\to D^{*0} \\ell^{-} \\barν_{\\ell} \\), \\( B^{*0} \\to D^{*+}(D^{+}) \\ell^{-} \\barν_{\\ell} \\), \\( B^{*0}_{s} \\to D^{*+}_{s} (D^{+}_{s}) \\ell^{-} \\barν_{\\ell} \\), \\( ψ\\to D^{*-}_{s}(D^{-}_{s}) \\ell^{+} ν_{\\ell} \\), \\( D^{*0} \\to K^{*-} (K^{-}) \\ell^{+} ν_{\\ell} \\), \\( B_c^{*-} \\to D^{*0} \\ell^{-} \\barν_{\\ell} \\), \\( \\bar{B_{s}}^{*0} \\to K^{*+} \\ell^{-} \\barν_{\\ell} \\), and \\( \\bar{B}^{*0} \\to ρ^{+} \\ell^{-} \\barν_{\\ell} \\). These decays correspond to four different quark-level transitions: \\(c\\to d\\), \\(b\\to c\\), \\(c\\to s\\), and \\(b\\to u\\), allowing us to explore a broad range of flavor dynamics.\\\\ Using the Hard-Wall AdS/QCD model, we compute the relevant transition form factors as functions of the momentum transfer \\(q^{2}\\). The framework provides analytic expressions for meson wave functions and decay constants, which serve as inputs for the form-factor calculations. From these form factors, we evaluate the differential and integrated branching ratios for each decay mode. Where possible, we compare our predictions with results obtained from other non-perturbative approaches.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.26040",
  "author_total": 3,
  "authors": [
    {
      "name": "S. Momeni"
    },
    {
      "name": "M. Saghebfar"
    },
    {
      "name": "A. Ranjbar"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/exhqxh3t0yjdm.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.26040",
  "fulltext_url": null,
  "id": "exhqxh3t0yjdm",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.26040",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "hep-ph"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2609.26040",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-22",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/exhqxh3t0yjdm.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:23:39Z",
      "native_id": "2609.26040",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.26040"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Semileptonic Decays of Heavy Vector Mesons in Hard-Wall AdS/QCD with $N_{f}=5$",
  "title_text": "Semileptonic Decays of Heavy Vector Mesons in Hard-Wall AdS/QCD with N_f=5",
  "type": "preprint",
  "updated_at": "2026-10-30T12:23:39Z",
  "url": "https://research.draconitic.com/paper/exhqxh3t0yjdm",
  "venue": "arXiv",
  "versions": []
}