Observation of the decay J=? ? e plus e- ?(1405) with ?(1405) ? ?0f 0(980)

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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.accessioned2024-05-19T14:50:57Z
dc.date.available2024-05-19T14:50:57Z
dc.date.issued2024
dc.departmentİstinye Üniversitesien_US
dc.description.abstractUsing a data sample of (10087 +/- 44) x 106 J=psi events collected by the BESIII detector in 2009, 2012, 2018 and 2019, the electromagnetic Dalitz process J=psi -> e+e-eta(1405) is observed via the decay eta(1405) -> pi 0f0(980), f0(980) -> pi+pi-, with a significance of about 9.8 sigma. The branching fraction of this decay is measured to be B(J=psi -> e+e-eta(1405)-> e+e- pi 0f0(980) -> e+e- pi 0 pi+ pi-)=(2.04 +/- 0.20(stat)+/- 0.08(syst))x 10-7. The branching fraction ratio B(J=psi -> e+e- eta(1405))=B(J=psi -> gamma eta(1405)) is determined to be (1.36 +/- 0.17(stat) +/- 0.06(syst)) x 10-2. Furthermore, an e+e- invariant mass dependent transition form factor of J=psi -> e+e-eta(1405) is presented for the first time. The obtained result provides input for different theoretical models and is valuable for the improved understanding the intrinsic structure of the eta(1405) meson.en_US
dc.description.sponsorshipNational Key R and D Program of China [2023YFA1606704, 2020YFA0406300, 2020YFA0406400]; National Natural Science Foundation of China (NSFC) [11805037, 11635010, 11735014, 11835012, 11935015, 11935016, 11935018, 11961141012, 12022510, 12025502, 12035009, 12035013, 12061131003, 12192260, 12192261, 12192262, 12192263, 12192264, 12192265, 12221005, 12225509, 12235017]; Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; NSFC [U1832121]; CAS [U1832121]; CAS Center for Excellence in Particle Physics (CCEPP); CAS Key Research Program of Frontier Sciences [QYZDJ-SSWSLH003, QYZDJ-SSW-SLH040]; 100 Talents Program of CAS; Institute of Nuclear and Particle Physics (INPAC); Shanghai Key Laboratory for Particle Physics and Cosmology; ERC [758462]; European Union's Horizon 2020 research and innovation programme under Marie Sklodowska-Curie grant [894790]; German Research Foundation DFG [443159800, 455635585, CRC 1044, FOR5327, GRK 2149]; Istituto Nazionale di Fisica Nucleare, Italy; Ministry of Development of Turkey [DPT2006K-120470]; National Research Foundation of Korea [NRF2022R1A2C1092335]; National Science and Technology fund of Mongolia; National Science Research and Innovation Fund (NSRF) via the Program Management Unit for Human Resources and Institutional Development, Research and Innovation of Thailand [B16F640076]; Polish National Science Centre [2019/35/O/ST2/02907]; Swedish Research Council; U.S. Department of Energy [DE-FG02-05ER41374]en_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 and D Program of China under Contracts No. 2023YFA1606704, No. 2020YFA0406300, No. 2020YFA0406400; National Natural Science Foundation of China (NSFC) under Contracts No. 11805037, No. 11635010, No. 11735014, No. 11835012, 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; Joint Large-Scale Scientic Facility Funds of the NSFC and CAS under Contracts No. U1832121; the CAS Center for Excellence in Particle Physics (CCEPP) ; CAS Key Research Program of Frontier Sciences under Contracts No. QYZDJ-SSWSLH003, 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's Horizon 2020 research and innovation programme under Marie Sklodowska-Curie grant agreement under Contract No. 894790; German Research Foundation DFG under Contracts No. 443159800, 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. NRF2022R1A2C1092335; National Science and Technology fund of Mongolia; National Science Research and Innovation Fund (NSRF) via the Program Management Unit for Human Resources and 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-FG02-05ER41374en_US
dc.identifier.doi10.1103/PhysRevD.109.012007
dc.identifier.issn2470-0010
dc.identifier.issn2470-0029
dc.identifier.issue1en_US
dc.identifier.scopus2-s2.0-85182556273en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org10.1103/PhysRevD.109.012007
dc.identifier.urihttps://hdl.handle.net/20.500.12713/5844
dc.identifier.volume109en_US
dc.identifier.wosWOS:001183235100006en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherAmer Physical Socen_US
dc.relation.ispartofPhysical Review Den_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.snmz20240519_kaen_US
dc.subjectGaseous-Hydrogenen_US
dc.subjectFinal-Statesen_US
dc.subjectAnnihilationsen_US
dc.subjectE(+)E(-)en_US
dc.subjectResten_US
dc.subjectTofen_US
dc.titleObservation of the decay J=? ? e plus e- ?(1405) with ?(1405) ? ?0f 0(980)en_US
dc.typeArticleen_US

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