{
  "abstract": "This paper uses the data corresponding to an integrated luminosity of $495$~pb$^{-1}$ in the center-of-mass energy region from 3.58~GeV to 3.71~GeV to study the relative phase between strong and electromagnetic amplitudes in the $ψ(2S)\\to p\\bar{p}$ decay. The cross sections and the effective form factors around $ψ(2S)$ of proton-antiproton pairs are presented thereby filling the gap in the experimental results around the $ψ(2S)$ resonance for the first time, and the results are consistent with the previous BESIII and BaBar results. The relative phase is extracted from the cross-section line shape as $Φ_{g,γ}=(105.9\\pm9.4)^\\circ$ or $Φ_{g,γ}=(-105.3\\pm9.1)^\\circ$. Correspondingly, two solutions for the $ψ(2S)\\to p\\bar{p}$ branching fractions are obtained as $\\mathcal{B}=(3.21\\pm0.13)\\times10^{-4}$ and $\\mathcal{B}=(3.47\\pm0.19)\\times10^{-4}$. These results support the universality of the phase and provide new insights into its underlying mechanism.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2608.15074",
  "author_total": 1,
  "authors": [
    {
      "name": "The BESIII Collaboration"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/at6rrjqmarzcj.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2608.15074",
  "fulltext_url": null,
  "id": "at6rrjqmarzcj",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2608.15074",
  "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"
    ],
    [
      "openalex",
      "3106|Quantum Chromodynamics and Particle Interactions"
    ]
  ],
  "openalex": "W7203685663",
  "pdf_url": "https://arxiv.org/pdf/2608.15074",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-11",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/at6rrjqmarzcj.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:06Z",
      "native_id": "2608.15074",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2608.15074"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ex",
      "subfield": "high-energy"
    }
  ],
  "title": "Measurement of $e^{+} e^{-}\\to p\\bar{p}$ around $ψ(2S)$ with scan method",
  "title_text": "Measurement of e^+ e^−→ pp̅ around ψ(2S) with scan method",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:06Z",
  "url": "https://research.draconitic.com/paper/at6rrjqmarzcj",
  "venue": "arXiv",
  "versions": []
}