{
  "abstract": "We investigate the exclusive semileptonic decays of $Λ\\to p \\ell^{-} \\barν_{\\ell}~(\\ell=e,μ)$ within the Standard Model using the light-front quark model. The transition form factor behaviors of $Λ\\to p$ are obtained from the effective treatment of nonvalence contributions in addition to the valence ones in the Drell-Yan-West frame due to the Bethe-Salpeter formalism. Based on these form factors, we obtain that the branching ratios of $Λ\\to p e^{-} \\barν_{e}$ and $p μ^{-} \\barν_μ$, including nonvalence contributions, are around $8.32\\times 10^{-4}$ and $1.31\\times 10^{-4}$, which are consistent with the latest measurements from the BESIII Collaboration, respectively. Our results indicate that nonvalence contributions can play a non-negligible role in the semileptonic baryon decays within the light-front framework.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2606.01768",
  "author_total": 2,
  "authors": [
    {
      "name": "Chong-Chung Lih"
    },
    {
      "name": "Chao-Qiang Geng"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/8ecwycpa7rnyb.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2606.01768",
  "fulltext_url": null,
  "id": "8ecwycpa7rnyb",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2606.01768",
  "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-ex"
    ],
    [
      "arxiv",
      "hep-ph"
    ],
    [
      "arxiv",
      "nucl-th"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2606.01768",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-21",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/8ecwycpa7rnyb.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:18Z",
      "native_id": "2606.01768",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2606.01768"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ex",
      "subfield": "high-energy"
    },
    {
      "field": "physics",
      "origin": "arxiv:nucl-th",
      "subfield": "nuclear"
    }
  ],
  "title": "Semileptonic Decays of $Λ\\to p \\ell^{-} \\barν_{\\ell}$ in the Light-Front Dynamics",
  "title_text": "Semileptonic Decays of Λ→ p ℓ^− ν̅_ℓ in the Light-Front Dynamics",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:18Z",
  "url": "https://research.draconitic.com/paper/8ecwycpa7rnyb",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1103/f668-vzjw",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}