Observation of the singly Cabibbo-suppressed decay ?c+ ? ?-K+?+

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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.accessioned2024-05-19T14:34:38Z
dc.date.available2024-05-19T14:34:38Z
dc.date.issued2024
dc.departmentİstinye Üniversitesien_US
dc.description.abstractThe singly Cabibbo-suppressed decay ?c+??-K+?+ is observed for the first time with a statistical significance of 5.4? by using 4.5 fb-1 of e+e- collision data collected at center-of-mass energies between 4.600 and 4.699 GeV with the BESIII detector at BEPCII. The absolute branching fraction of ?c+??-K+?+ is measured to be (3.8±1.2stat±0.2syst)×10-4 in a model-independent approach. This is the first observation of a Cabibbo-suppressed ?c+ decay involving ?- in the final state. The ratio of branching fractions between ?c+??-K+?+ and the Cabibbo-favored decay ?c+??-?+?+ is observed to be (0.4±0.1)sc2, where scsin?c=0.2248 with ?c the Cabibbo mixing angle. © 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.sponsorshipScience and Technology Facilities Council, STFC; Shanghai 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; University of Chinese Academy of Sciences, UCAS; Lanzhou University, LZU; National Science and Technology Council, NSTC; Sun Yat-sen University, SYSU; Vetenskapsrådet, VR; Fundamental Research Funds for the Central Universities; University of Science and Technology of China, USTC; 200-0605; U.S. Department of Energy, USDOE: DE-SC-0012069, DE-FG02-05ER41374; U.S. Department of Energy, USDOE; Chinese Academy of Sciences, CAS: U1732263, U2032111, U1832103, U1832207; Chinese Academy of Sciences, CAS; Key Project of Frontier Science Research of Chinese Academy of Sciences: QYZDJ-SSW-SLH040; Key Project of Frontier Science Research of Chinese Academy of Sciences; Deutsche Forschungsgemeinschaft, DFG: GRK 214, FOR 2359, 443159800, CRC 1044; Deutsche Forschungsgemeinschaft, DFG; Knut och Alice Wallenbergs Stiftelse: 2016.0157; Knut och Alice Wallenbergs Stiftelse; National Natural Science Foundation of China, NSFC: 11625523, 12025502, 11935016, 11805086, 11635010, 11335008, 11705192, 12035009, 11950410506, 11735014, 11822506, 11961141012, 11835012, 12022510, 12061131003, 11935018, 12005311, 12035013, 11935015; National Natural Science Foundation of China, NSFC; China Postdoctoral Science Foundation: 2020T130636, 2019M662152; China Postdoctoral Science Foundation; National Key Research and Development Program of China, NKRDPC: 2020YFA0406300, 2020YFA0406400; National Key Research and Development Program of China, NKRDPC; Horizon 2020: 894790; Horizon 2020; DPT2006K-120470; Royal Society: DH160214, DH140054; Royal Society; European Research Council, ERC: 758462; European Research Council, ERCen_US
dc.description.sponsorshipThe BESIII collaboration thanks the staff of BEPCII, the IHEP computing center and the supercomputing center of the University of Science and Technology of China (USTC) for their strong support. Authors are grateful to Hai-Yang Cheng, Fanrong Xu, and Yu-Kuo Hsiao for enlightening discussions. This work is supported in part by National Key R&D Program of China under Contracts No. 2020YFA0406400 and No. 2020YFA0406300; National Natural Science Foundation of China (NSFC) under Contracts No. 11335008, No. 11625523, No. 11635010, No. 11735014, No. 11822506, No. 11835012, No. 11935015, No. 11935016, No. 11935018, No. 11961141012, No. 12022510, No. 12025502, No. 12035009, No. 12035013, No. 12061131003, No. 12005311, No. 11805086, No. 11705192, and No. 11950410506; the Fundamental Research Funds for the Central Universities, University of Science and Technology of China, Sun Yat-sen University, Lanzhou University, University of Chinese Academy of Sciences; 100 Talents Program of Sun Yat-sen University; 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. U1732263, No. U1832207, No. U1832103, and No. U2032111; CAS Key Research Program of Frontier Sciences under Contract No. QYZDJ-SSW-SLH040; 100 Talents Program of CAS; China Postdoctoral Science Foundation under Contracts No. 2019M662152 and No. 2020T130636; The Institute of Nuclear and Particle Physics (INPAC) and Shanghai Key Laboratory for Particle Physics and Cosmology; ERC under Contract No. 758462; European Union Horizon 2020 research and innovation program under Contract No. Marie Sklodowska-Curie Grant Agreement No. 894790; German Research Foundation DFG under Contracts No. 443159800, Collaborative Research Center CRC 1044, FOR 2359, FOR 2359, GRK 214; Istituto Nazionale di Fisica Nucleare, Italy; Ministry of Development of Turkey under Contract No. DPT2006K-120470; National Science and Technology fund; Olle Engkvist Foundation under Contract No. 200-0605; STFC (United Kingdom); The Knut and Alice Wallenberg Foundation (Sweden) under Contract No. 2016.0157; The Royal Society, U.K. under Contracts No. DH140054 and No. DH160214; The Swedish Research Council; and U.S. Department of Energy under Contracts No. DE-FG02-05ER41374 and No. DE-SC-0012069.en_US
dc.identifier.doi10.1103/PhysRevD.109.L071103
dc.identifier.issn2470-0010
dc.identifier.issue7en_US
dc.identifier.scopus2-s2.0-85192167942en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1103/PhysRevD.109.L071103
dc.identifier.urihttps://hdl.handle.net/20.500.12713/4526
dc.identifier.volume109en_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherAmerican Physical Societyen_US
dc.relation.ispartofPhysical Review Den_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.snmz20240519_kaen_US
dc.titleObservation of the singly Cabibbo-suppressed decay ?c+ ? ?-K+?+en_US
dc.typeArticleen_US

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