Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Study of the decay and observation of the -annihilation decay. / The BESIII Collaboration.
в: Physical Review D, Том 104, № 7, L071101, 01.10.2021.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Study of the decay and observation of the -annihilation decay
AU - BESIII Collaboration
AU - Ablikim, M.
AU - Achasov, M. N.
AU - Adlarson, P.
AU - Ahmed, S.
AU - Albrecht, M.
AU - Aliberti, R.
AU - Amoroso, A.
AU - An, M. R.
AU - An, Q.
AU - Bai, X. H.
AU - Bai, Y.
AU - Bakina, O.
AU - Baldini Ferroli, R.
AU - Balossino, I.
AU - Ban, Y.
AU - Begzsuren, K.
AU - Berger, N.
AU - Bertani, M.
AU - Bettoni, D.
AU - Bianchi, F.
AU - Bloms, J.
AU - Bortone, A.
AU - Boyko, I.
AU - Briere, R. A.
AU - Cai, H.
AU - Cai, X.
AU - Calcaterra, A.
AU - Cao, G. F.
AU - Cao, N.
AU - Cetin, S. A.
AU - Chang, J. F.
AU - Chang, W. L.
AU - Chelkov, G.
AU - Chen, D. Y.
AU - Chen, G.
AU - Chen, H. S.
AU - Chen, M. L.
AU - Chen, S. J.
AU - Chen, X. R.
AU - Chen, Y. B.
AU - Chen, Z. J.
AU - Cheng, W. S.
AU - Cibinetto, G.
AU - Cossio, F.
AU - Cui, X. F.
AU - Dai, H. L.
AU - Dai, X. C.
AU - Dbeyssi, A.
AU - Muchnoi, N. YU
AU - Nikolaev, I. B.
N1 - Funding Information: The BESIII Collaboration thanks the staff of BEPCII and the IHEP computing center for their strong support. This work is supported in part by the National Key Research and Development Program of China under Contracts No. 2020YFA0406400 and No. 2020YFA0406300; National Natural Science Foundation of China (NSFC) under Contracts No. 11625523, No. 11635010, No. 11735014, No. 11822506, No. 11835012, No. 11935015, No. 11935016, No. 11935018, 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. U1732263, No. U1832107, and No. U1832207; CAS Key Research Program of Frontier Sciences under Contract No. QYZDJ-SSW-SLH040; 100 Talents Program of CAS; INPAC and Shanghai Key Laboratory for Particle Physics and Cosmology; ERC under Contract No. 758462; European Union Horizon 2020 research and innovation programme under Contract No. Marie Sklodowska-Curie Grant Agreement No. 894790; German Research Foundation DFG under Contract No. 443159800, Collaborative Research Center CRC 1044, 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, UK under Contracts No. DH140054 and No. DH160214; the Swedish Research Council; and the U.S. Department of Energy under Contracts No. DE-FG02-05ER41374 and No. DE-SC-0012069. Funding Information: National Key Research and Development Program of China National Natural Science Foundation of China Chinese Academy of Sciences CAS Key Research Program of Frontier Sciences 100 Talents Program of CAS INPAC Shanghai Key Laboratory for Particle Physics and Cosmology H2020 European Research Council European Union Horizon 2020 research and innovation programme Marie Sklodowska-Curie Actions Deutsche Forschungsgemeinschaft Collaborative Research Center Istituto Nazionale di Fisica Nucleare Sezione di Padova Ministry of Development of Turkey National Science and Technology Olle Engkvist Foundation Science and Technology Facilities Council Knut och Alice Wallenbergs Stiftelse Royal Society Vetenskapsr?det U.S. Department of Energy. Publisher Copyright: © 2021 Published by the American Physical Society
PY - 2021/10/1
Y1 - 2021/10/1
N2 - The decay is observed for the first time, using collision data corresponding to an integrated luminosity of , collected by the BESIII detector at center-of-mass energies between 4.178 and 4.226 GeV. The absolute branching fraction for this decay is measured to be . The first amplitude analysis of this decay reveals the substructures in and determines the relative fractions and the phases among these substructures. The dominant intermediate process is with a branching fraction of . We also observe the -annihilation process , with a branching fraction of , which is larger than the branching fractions of other measured pure -annihilation decays by 1 order of magnitude.
AB - The decay is observed for the first time, using collision data corresponding to an integrated luminosity of , collected by the BESIII detector at center-of-mass energies between 4.178 and 4.226 GeV. The absolute branching fraction for this decay is measured to be . The first amplitude analysis of this decay reveals the substructures in and determines the relative fractions and the phases among these substructures. The dominant intermediate process is with a branching fraction of . We also observe the -annihilation process , with a branching fraction of , which is larger than the branching fractions of other measured pure -annihilation decays by 1 order of magnitude.
UR - http://www.scopus.com/inward/record.url?scp=85117940756&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.104.L071101
DO - 10.1103/PhysRevD.104.L071101
M3 - Article
AN - SCOPUS:85117940756
VL - 104
JO - Physical Review D
JF - Physical Review D
SN - 2470-0010
IS - 7
M1 - L071101
ER -
ID: 35561149