{
  "abstract": "We investigate the mass spectra of the \\(ncnc\\bar{c}\\), \\(nnnn\\bar{c}\\), and \\(nnnc\\bar{c}\\) pentaquark systems, where \\(n\\) denotes a light \\(u\\) or \\(d\\) quark, within a leading-order linear Regge approximation. The extension of the baryon intercept and inverse-slope additivity relations to these systems is implemented as a minimal cluster-additive ansatz for compact color-antitriplet diquarks, rather than assumed to be an exact QCD relation. By analyzing the corresponding trajectories in the \\((J,M^2)\\) plane, we first determine the allowed mass range of the ground-state \\(ncnc\\bar{c}\\) pentaquark and extract the associated Regge parameters. Using these inputs, we estimate the mass intervals of the excited states of the \\(ncnc\\bar{c}\\), \\(nnnn\\bar{c}\\), and \\(nnnc\\bar{c}\\) systems. We also obtain analytical mass-inequality relations. The resulting spectra exhibit a systematic ordering with increasing total spin and orbital excitation along the Regge trajectories. We further compare the predicted states with selected kinematically compatible meson--baryon thresholds as a qualitative guide to possible nearby channels. Our results provide a useful reference for future theoretical studies and may serve as a guide for experimental searches and spin-parity assignments of pentaquark candidates in the open- and hidden-charm sectors.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.12973",
  "author_total": 2,
  "authors": [
    {
      "name": "Vandan Patel"
    },
    {
      "name": "Ajay Kumar Rai"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/7bnaw5fbdvh47.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.12973",
  "fulltext_url": null,
  "id": "7bnaw5fbdvh47",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.12973",
  "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/2610.12973",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-09",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/7bnaw5fbdvh47.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:28:36Z",
      "native_id": "2610.12973",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.12973"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Spectroscopy of $ncnc\\bar{c}$, $nnnn\\bar{c}$, and $nnnc\\bar{c}$ pentaquarks within the framework of Regge phenomenology",
  "title_text": "Spectroscopy of ncncc̅, nnnnc̅, and nnncc̅ pentaquarks within the framework of Regge phenomenology",
  "type": "preprint",
  "updated_at": "2026-10-30T12:28:36Z",
  "url": "https://research.draconitic.com/paper/7bnaw5fbdvh47",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1142/s0217751x26501861",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}