Measurement of $e^{+} e^{-}\to p\bar{p}$ around $ψ(2S)$ with scan method

[2608.15074] Measurement of $e^{+} e^{-}\to p\bar{p}$ around $ψ(2S)$ with scan method Skip to main content Search Submit Donate Log in Search arXiv Press Enter to search · Advanced search High Energy Physics - Experiment arXiv:2608.15074 (hep-ex) [Submitted on 15 Aug 2026] Title: Measurement of $e^{+} e^{-}\to p\bar{p}$ around $ψ(2S)$ with scan method Authors: The BESIII Collaboration View a PDF of the paper titled Measurement of $e^{+} e^{-}\to p\bar{p}$ around $\psi(2S)$ with scan method, by The BESIII Collaboration View PDF HTML (experimental) 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 $\psi(2S)\to p\bar{p}$ decay. The cross sections and the effective form factors around $\psi(2S)$ of proton-antiproton pairs are presented thereby filling the gap in the experimental results around the $\psi(2S)$ 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 $\Phi_{g,\gamma}=(105.9\pm9.4)^\circ$ or $\Phi_{g,\gamma}=(-105.3\pm9.1)^\circ$. Correspondingly, two solutions for the $\psi(2S)\to p\bar{p}$ 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. Comments: 22 pages, 5 figures, 4 tables Subjects: High Energy Physics - Experiment (hep-ex) Cite as: arXiv:2608.15074 [hep-ex] (or arXiv:2608.15074v1 [hep-ex] for this version) https://doi.org/10.48550/arXiv.2608.15074 Focus to learn more arXiv-issued DOI via DataCite Submission history From: Yadi Wang [ view email ] [v1] Sat, 15 Aug 2026 06:47:33 UTC (345 KB) Full-text links: Access Paper: View a PDF of the paper titled Measurement of $e^{+} e^{-}\to p\bar{p}$ around $\psi(2S)$ with scan method, by The BESIII Collaboration View PDF HTML (experimental) TeX Source view license Current browse context: hep-ex < prev | next > new | recent | 2026-08 References & Citations INSPIRE HEP NASA ADS Google Scholar Semantic Scholar export BibTeX citation Loading... BibTeX formatted citation × loading... Data provided by: Bookmark Bibliographic Tools Bibliographic and Citation Tools Bibliographic Explorer Toggle Bibliographic Explorer ( What is the Explorer? ) Connected Papers Toggle Connected Papers ( What is Connected Papers? ) Litmaps Toggle Litmaps ( What is Litmaps? ) scite.ai Toggle scite Smart Citations ( What are Smart Citations? ) Code, Data, Media Code, Data and Media Associated with this Article alphaXiv Toggle alphaXiv ( What is alphaXiv? ) Links to Code Toggle CatalyzeX Code Finder for Papers ( What is CatalyzeX? ) DagsHub Toggle DagsHub ( What is DagsHub? ) GotitPub Toggle Gotit.pub ( What is GotitPub? ) Huggingface Toggle Hugging Face ( What is Huggingface? ) ScienceCast Toggle ScienceCast ( What is ScienceCast? ) Demos Demos Replicate Toggle Replicate ( What is Replicate? ) Spaces Toggle Hugging Face Spaces ( What is Spaces? ) Spaces Toggle TXYZ.AI ( What is TXYZ.AI? ) Related Papers Recommenders and Search Tools Link to Influence Flower Influence Flower ( What are Influence Flowers? ) Core recommender toggle CORE Recommender ( What is CORE? ) Author Venue Institution Topic About arXivLabs arXivLabs: experimental projects with community collaborators arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website. Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners that adhere to them. Have an idea for a project that will add value for arXiv's community? Learn more about arXivLabs . Which authors of this paper are endorsers? | Disable MathJax ( What is MathJax? ) We gratefully acknowledge support from our major funders , member institutions , , and all contributors. About · Help · Contact · Subscribe · Copyright · Privacy · Accessibility · Operational Status (opens in new tab) Major funding support from

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