{
  "abstract": "We study a family of genuinely exotic five-flavor molecular pentaquark states containing the five quark flavors u, d, s, c, b that form experimentally accessible hadrons. We construct the meson-baryon interaction from the local hidden gauge symmetry combined with heavy-quark spin symmetry, following the chiral unitary description that reproduces the LHCb hidden-charm strange pentaquarks. Heavy-quark flavor symmetry allows us to obtain the u d s c b ¯ sector by replacing the anti-charm quark in the meson with an anti-bottom quark while keeping the charm quark in the baryon. As a result, we obtain ten threshold-associated isoscalar poles with J P = 1 / 2 − , 3 / 2 − , 5 / 2 − in the range 7.72 to 7.96 GeV. They are narrow and organized into heavy-quark spin multiplets with predicted near-degeneracies. The loop subtraction constant, the single scheme parameter, is not adjusted by hand. Requiring the loop function at threshold to be independent of the heavy flavor fixes a ≃ − 3.2 to − 3.4 from the charm sector, consistent with the value a = − 3.1 used in the earlier two-sector study, and the predicted masses move by several tens of MeV when a varies between − 2.9 and − 3.2 . There are four states that overlap with the earlier two-sector study in the literature to about 2 MeV, which shows that the separate-sector treatment is recovered as a limit of this work. Moreover, the strongly coupled B *Ξ c and B s * Λ c channels support additional deeply bound poles. We show that their number and positions depend on the regularization scheme, and we quantify this dependence by comparing dimensional regularization with a cutoff scheme. The resulting states provide a signal that can be searched for at LHCb in the B c Λ and B s * Λ c invariant mass spectra in the window 7.60 to 7.77 GeV.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 3,
  "authors": [
    {
      "name": "Ratirat Suntharawirat",
      "orcid": "0009-0005-6002-3591"
    },
    {
      "name": "Nongnapat Ponkhuha",
      "orcid": "0009-0004-7891-802X"
    },
    {
      "name": "Daris Samart",
      "orcid": "0000-0003-4690-7591"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/7vb26fjrc2yrb.bib",
  "cited_by": 0,
  "doi": "10.1016/j.physletb.2026.141059",
  "fulltext_url": "http://www.sciencedirect.com/science/article/pii/S0370269326009093",
  "id": "7vb26fjrc2yrb",
  "issns": [
    "0370-2693",
    "1873-2445"
  ],
  "landing_url": "https://linkinghub.elsevier.com/retrieve/pii/S0370269326009093",
  "language": "en",
  "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": null,
  "native_subjects": [
    [
      "lcc",
      "QC1-999"
    ],
    [
      "openalex",
      "3106|Quantum Chromodynamics and Particle Interactions"
    ]
  ],
  "openalex": "W7221797949",
  "pdf_url": "https://www.sciencedirect.com/science/article/pii/S0370269326009093/pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-30",
  "publisher": "Elsevier BV",
  "ris": "https://research.draconitic.com/paper/7vb26fjrc2yrb.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:06Z",
      "native_id": "10.1016/j.physletb.2026.141059",
      "source": "crossref",
      "url": "https://linkinghub.elsevier.com/retrieve/pii/S0370269326009093"
    },
    {
      "first_seen": "2026-10-30T13:44:35Z",
      "native_id": "b7f37f0cb1274ba9948bdc29087ea5c9",
      "source": "doaj",
      "url": "https://doi.org/10.1016/j.physletb.2026.141059"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "openalex:3106|Quantum Chromodynamics and Particle Interactions",
      "subfield": "high-energy"
    }
  ],
  "title": "Five-flavor udscb¯ molecular pentaquarks from heavy-quark and local hidden gauge symmetries",
  "title_text": "Five-flavor udscb¯ molecular pentaquarks from heavy-quark and local hidden gauge symmetries",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T13:44:35Z",
  "url": "https://research.draconitic.com/paper/7vb26fjrc2yrb",
  "venue": "Physics Letters B",
  "versions": []
}