Observation of the Anomalous Shape of X (1840) in J/? ??3 (?+?-) Indicating a Second Resonance Near p p ¯ Threshold

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dc.contributor.authorAblikim, M.
dc.contributor.authorAchasov, M.N.
dc.contributor.authorAdlarson, P.
dc.contributor.authorAi, X.C.
dc.contributor.authorAliberti, R.
dc.contributor.authorAmoroso, A.
dc.contributor.authorÇetin, Serkant Ali
dc.date.accessioned2024-05-19T14:34:40Z
dc.date.available2024-05-19T14:34:40Z
dc.date.issued2024
dc.departmentİstinye Üniversitesien_US
dc.description.abstractUsing a sample of (10087±44)×106 J/? events, which is about 45 times larger than that was previously analyzed, a further investigation on the J/???3(?+?-) decay is performed. A significant distortion at 1.84 GeV/c2 in the line shape of the 3(?+?-) invariant mass spectrum is observed for the first time, which could be resolved by two overlapping resonant structures, X(1840) and X(1880). The new state X(1880) is observed with a statistical significance larger than 10?. The mass and width of X(1880) are determined to be 1882.1±1.7±0.7 MeV/c2 and 30.7±5.5±2.4 MeV, respectively, which indicates the existence of a pp¯ bound state. © 2024 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.en_US
dc.description.sponsorshipShanghai Key Laboratory for Particle Physics and Cosmology, SKLPPC; Instituto Nazionale di Fisica Nucleare, INFN; Institute of Nuclear and Particle Physics, Shanghai Jiao Tong University, INPAC; Chinese Academy of Sciences, CAS; Vetenskapsrådet, VR; National Key Research and Development Program of China, NKRDPC: 2020YFA0406300, 2020YFA0406400; National Key Research and Development Program of China, NKRDPC; B16F640076; DPT2006K-120470; Deutsche Forschungsgemeinschaft, DFG: GRK 2149, 455635585, CRC 1044, FOR5327; Deutsche Forschungsgemeinschaft, DFG; Horizon 2020 Framework Programme, H2020: 894790; Horizon 2020 Framework Programme, H2020; Narodowe Centrum Nauki, NCN: 2019/35/O/ST2/02907; Narodowe Centrum Nauki, NCN; National Natural Science Foundation of China, NSFC: 12221005, 12035009, 12061131003, 12192262, 12192263, 11935015, 12022510, 12225509, 12035013, 12192260, 11961141012, 11735014, 12192264, 12235017, 12025502, 11905037, 11635010, 11935016, 11835012, 11935018, 12192265, 12192261; National Natural Science Foundation of China, NSFC; Key Project of Frontier Science Research of Chinese Academy of Sciences: QYZDJ-SSW-SLH003, QYZDJ-SSW-SLH040; Key Project of Frontier Science Research of Chinese Academy of Sciences; CAS Center for Excellence in Particle Physics, CCEPP: U1832207; CAS Center for Excellence in Particle Physics, CCEPP; U.S. Department of Energy, USDOE: DE-FG02-05ER41374; U.S. Department of Energy, USDOE; European Research Council, ERC: 758462; European Research Council, ERC; National Research Foundation of Korea, NRF: NRF-2022R1A2C1092335; National Research Foundation of Korea, NRFen_US
dc.description.sponsorshipThe BESIII Collaboration thanks the staff of BEPCII and the IHEP computing center for their strong support. This work is supported in part by National Key R&D Program of China under Contracts No. 2020YFA0406300, No. 2020YFA0406400; National Natural Science Foundation of China (NSFC) under Contracts No. 11635010, No. 11735014, No. 11835012, No. 11905037, No. 11935015, No. 11935016, No. 11935018, No. 11961141012, No. 12022510, No. 12025502, No. 12035009, No. 12035013, No. 12061131003, No. 12192260, No. 12192261, No. 12192262, No. 12192263, No. 12192264, No. 12192265, No. 12221005, No. 12225509, No. 12235017; the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; the CAS Center for Excellence in Particle Physics (CCEPP); Joint Large-Scale Scientific Facility Funds of the NSFC and CAS under Contract No. U1832207; CAS Key Research Program of Frontier Sciences under Contracts No. QYZDJ-SSW-SLH003, No. QYZDJ-SSW-SLH040; 100 Talents Program of CAS; The Institute of Nuclear and Particle Physics (INPAC) and Shanghai Key Laboratory for Particle Physics and Cosmology; ERC under Contract No. 758462; European Union\u2019s Horizon 2020 research and innovation programme under Marie Sklodowska-Curie grant agreement under Contract No. 894790; German Research Foundation DFG under Contract No. 455635585, Collaborative Research Center CRC 1044, FOR5327, GRK 2149; Istituto Nazionale di Fisica Nucleare, Italy; Ministry of Development of Turkey under Contract No. DPT2006K-120470; National Research Foundation of Korea under Contract No. NRF-2022R1A2C1092335; National Science and Technology fund of Mongolia; National Science Research and Innovation Fund (NSRF) via the Program Management Unit for Human Resources & Institutional Development, Research and Innovation of Thailand under Contract No. B16F640076; Polish National Science Centre under Contract No. 2019/35/O/ST2/02907; The Swedish Research Council; U.S. Department of Energy under Contract No. DE-FG02-05ER41374.en_US
dc.identifier.doi10.1103/PhysRevLett.132.151901
dc.identifier.issn0031-9007
dc.identifier.issue15en_US
dc.identifier.pmid38682972en_US
dc.identifier.scopus2-s2.0-85190064772en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.urihttps://doi.org/10.1103/PhysRevLett.132.151901
dc.identifier.urihttps://hdl.handle.net/20.500.12713/4532
dc.identifier.volume132en_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.ispartofPhysical Review Lettersen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.snmz20240519_kaen_US
dc.subjectAtomic Physicsen_US
dc.subjectBound-Statesen_US
dc.subjectInvariant-Mass Spectraen_US
dc.subjectLines Shapesen_US
dc.subjectResonant Structuresen_US
dc.subjectStatistical Significanceen_US
dc.subjectMass Spectrometryen_US
dc.subjectArticleen_US
dc.subjectControlled Studyen_US
dc.subjectDiagnosisen_US
dc.subjectHumanen_US
dc.titleObservation of the Anomalous Shape of X (1840) in J/? ??3 (?+?-) Indicating a Second Resonance Near p p ¯ Thresholden_US
dc.typeArticleen_US

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