Direct Measurement of the Branching Fractions B(?(3686) ? J/?X) and B(?(3770) ? J/?X), and Observation of the State R(3760) in e+e- ? J/?X

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dc.authoridLavezzi, Lia/0000-0002-4928-8151|Wang, Yunwen/0009-0008-3083-7799|Calligaris, Luigi/0000-0002-9951-9448|Yuncu, Alperen/0000-0001-9696-9331|Han, Jian/0000-0002-0647-4050|Sheng, Jin-Huan/0000-0002-2655-6301|Gradl, Wolfgang/0000-0002-9974-8320|Li, Kun/0000-0002-3638-2974|wang, qi/0000-0002-2794-6897|Janchiv, Shinebayar/0000-0003-1207-3322|Messchendorp, Johan/0000-0001-6649-0549|Zhemchugov, Alexey/0000-0002-3360-4965|Wu, Xin/0000-0001-7655-389X|Mangoni, Alessio/0000-0002-4786-6632|Zhang, Jiawei/0000-0001-9635-154X|Kolcu, Onur Bugra/0000-0002-9177-1286|Chen, Qi/0000-0002-6568-7267|Wen, Huwei/0000-0002-8422-1593|Farineli, Riccardo/0000-0002-7972-9093|Wang, Yue/0000-0001-8673-6358|Pathak, Atanu/0000-0001-9861-2942|Spataro, Stefano/0000-0001-9601-405X|Yang, Jing/0009-0004-8274-9863|Lellmann, Max/0000-0002-2154-9292|Achasov, Mikhail/0000-0002-9400-8622|Adlarson, Patrik/0000-0001-6280-3851|, tong/0000-0001-7696-1252|Cossio, Fabio/0000-0003-0454-3144|Johansson, Tord/0000-0002-6945-716X|Amoroso, Antonio/0000-0002-3095-8610|Bortone, Alberto/0000-0003-1577-5004|Muramatsu, Hajime/0000-0003-0305-4461|Kuessner, Meike/0000-0002-0028-0490|Schoenning, Karin/0000-0002-3490-9584|Albrecht, Malte/0000-0001-6180-4297|Lane, Jake/0000-0002-5816-9488|Qi, Hongrong/0000-0002-9325-2308|Greco, Michela/0000-0002-7299-7829|Lange, Jens Soren/0000-0003-0234-0474|Destefanis, Marco Giovanni Maria/0000-0003-1997-6751|Kliemt, Ralf/0000-0002-6013-3329|Tsednee, Banzragch/0000-0003-0881-0713|Song, Yunxuan/0000-0003-0256-4320
dc.authorwosidLi, Lei/JPE-6543-2023
dc.authorwosidHe, Chen/JLM-5059-2023
dc.authorwosidLavezzi, Lia/AAO-9660-2021
dc.authorwosidChelkov, Georgy A./G-9934-2019
dc.authorwosidYan, Weichao/JDC-8711-2023
dc.authorwosidwang, hui/GRS-4730-2022
dc.authorwosidwang, yiran/IAP-0414-2023
dc.contributor.authorAblikim, M.
dc.contributor.authorAchasov, M. N.
dc.contributor.authorAdlarson, P.
dc.contributor.authorAhmed, S.
dc.contributor.authorAlbrecht, M.
dc.contributor.authorAmoroso, A.
dc.contributor.authorAn, Q.
dc.date.accessioned2024-07-18T20:47:11Z
dc.date.available2024-07-18T20:47:11Z
dc.date.issued2021
dc.departmentİstanbul Bilgi Üniversitesien_US
dc.description.abstractWe report a measurement of the observed cross sections of e(+)e(-) -> J/psi X based on 3.21 fb(-1) of data accumulated at energies from 3.645 to 3.891 GeV with the BESIII detector operated at the BEPCII collider. In analysis of the cross sections, we measured the decay branching fractions of B(psi(3686 -> J/psi X) = (64.4 +/- 0.6 +/- 1.6)% and B(psi(3770) -> J/psi X) = (0.5 +/- 0.2 +/- 0.1)% for the first time. The energy-dependent line shape of these cross sections cannot be well described by two Breit-Wigner (BW) amplitudes of the expected decays psi(3686) -> J/psi X and psi(3770) -> J/psi X. Instead, it can be better described with one more BW amplitude of the decay R(3760) -> J/psi X. Under this assumption, we extracted the R(3760) mass M-R(3760) = 3766.2 +/- 3.8 +/- 0.4 MeV/c(2), total width Gamma(tot)(R(3760)) = 22.2 +/- 5.9 +/- 1.4 MeV, and product of leptonic width and decay branching fraction Gamma(ee)(R(3760)) B[R(3760) -> J/psi X] = (79.4 +/- 85.5 +/- 11.7) eV. The significance of the R(3760) is 5.3 sigma. The first uncertainties of these measured quantities are from fits to the cross sections and second systematic.en_US
dc.description.sponsorshipIHEP computing center; National Key Basic Research Program of China [2009CB825204, 2015CB856700]; National Key R&D Program of China [2020YFA0406400]; National Natural Science Foundation of China (NSFC) [10935007, 11625523, 11635010, 11735014, 11822506, 11835012, 11961141012]; Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; Joint Large-Scale Scientific Facility Funds of the NSFC; CAS [U1532257, U1532258, U1732263, U1832207]; CAS Key Research Program of Frontier Sciences [QYZDJSSW-SLH003, QYZDJ-SSW-SLH040]; 100 Talents Program of CAS [Y129360]; CAS Other Research Program [Y129360]; INPAC and Shanghai Key Laboratory for Particle Physics and Cosmology; ERC [758462]; German Research Foundation DFG; Collaborative Research Center CRC [FOR 2359]; Istituto Nazionale di Fisica Nucleare, Italy; Ministry of Development of Turkey [DPT2006K-120470]; National Science and Technology fund; STFC (United Kingdom); Knut and Alice Wallenberg Foundation (Sweden) [2016.0157]; Royal Society, United Kingdom [DH140054, DH160214]; Swedish Research Council; U.S. Department of Energy [DE-FG02-05ER41374, DE-SC-0010118, DE-SC-0012069]en_US
dc.description.sponsorshipThe BESIII Collaboration thank the staff of BEPCII and the IHEP computing center for their strong support. This work is supported in part by National Key Basic Research Program of China under Contracts No. 2009CB825204 and No. 2015CB856700; National Key R&D Program of China under Contract No. 2020YFA0406400; National Natural Science Foundation of China (NSFC) under Contracts No. 10935007, No. 11625523, No. 11635010, No. 11735014, No. 11822506, No. 11835012, and No. 11961141012; the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; Joint Large-Scale Scientific Facility Funds of the NSFC and CAS under Contracts No. U1532257, No. U1532258, No. U1732263, and No. U1832207; CAS Key Research Program of Frontier Sciences under Contracts No. QYZDJSSW-SLH003 and No. QYZDJ-SSW-SLH040; 100 Talents Program of CAS; CAS Other Research Program under Code No. Y129360; INPAC and Shanghai Key Laboratory for Particle Physics and Cosmology; ERC under Contract No. 758462; German Research Foundation DFG under Contracts No. Collaborative Research Center CRC 1044 and No. FOR 2359; Istituto Nazionale di Fisica Nucleare, Italy; Ministry of Development of Turkey under Contract No. DPT2006K-120470; National Science and Technology fund; STFC (United Kingdom); The Knut and Alice Wallenberg Foundation (Sweden) under Contract No. 2016.0157; The Royal Society, United Kingdom under Contracts No. DH140054 and No. DH160214; The Swedish Research Council; and U.S. Department of Energy under Contracts No. DE-FG02-05ER41374, No. DE-SC-0010118, and No. DE-SC-0012069.en_US
dc.identifier.doi10.1103/PhysRevLett.127.082002
dc.identifier.issn0031-9007
dc.identifier.issn1079-7114
dc.identifier.issue8en_US
dc.identifier.pmid34477419en_US
dc.identifier.scopus2-s2.0-85113688148en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1103/PhysRevLett.127.082002
dc.identifier.urihttps://hdl.handle.net/11411/7717
dc.identifier.volume127en_US
dc.identifier.wosWOS:000686914700004en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherAmer Physical Socen_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.subjectCross-Sectionen_US
dc.subjectPsi(3770)en_US
dc.titleDirect Measurement of the Branching Fractions B(?(3686) ? J/?X) and B(?(3770) ? J/?X), and Observation of the State R(3760) in e+e- ? J/?Xen_US
dc.typeArticleen_US

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