Study of J/ψ and ψ(3686)→Σ(1385)0Σ¯(1385)0 and Ξ0Ξ¯0

• DOI: 10.1016/j.physletb.2017.04.048
• Publication Date: 2017-04-26T16:18:06Z
• Authors: M. Ablikim; M.N. Achasov; S. Ahmed; X.C. Ai; O. Albayrak; M. Albrecht; D.J. Ambrose; A. Amoroso; F.F. An; Q. An; J.Z. Bai; O. Bakina; R. Baldini Ferroli; Y. Ban; D.W. Bennett; J.V. Bennett; N. Berger; M. Bertani; D. Bettoni; J.M. Bian; F. Bianchi; E. Boger; I. Boyko; R.A. Briere; H. Cai; X. Cai; O. Cakir; A. Calcaterra; G.F. Cao; S.A. Cetin; J. Chai; J.F. Chang; G. Chelkov; G. Chen; H.S. Chen; J.C. Chen; M.L. Chen; S. Chen; S.J. Chen; X. Chen; X.R. Chen; Y.B. Chen; X.K. Chu; G. Cibinetto; H.L. Dai; J.P. Dai; A. Dbeyssi; D. Dedovich; Z.Y. Deng; A. Denig; I. Denysenko; M. Destefanis; F. De Mori; Y. Ding; C. Dong; J. Dong; L.Y. Dong; M.Y. Dong; Z.L. Dou; S.X. Du; P.F. Duan; J.Z. Fan; J. Fang; S.S. Fang; X. Fang; Y. Fang; R. Farinelli; L. Fava; F. Feldbauer; G. Felici; C.Q. Feng; E. Fioravanti; M. Fritsch; C.D. Fu; Q. Gao; X.L. Gao; Y. Gao; Z. Gao; I. Garzia; K. Goetzen; L. Gong; W.X. Gong; W. Gradl; M. Greco; M.H. Gu; Y.T. Gu; Y.H. Guan; A.Q. Guo; L.B. Guo; R.P. Guo; Y. Guo; Y.P. Guo; Z. Haddadi; A. Hafner; S. Han; X.Q. Hao; F.A. Harris; K.L. He; F.H. Heinsius; T. Held; Y.K. Heng; T. Holtmann; Z.L. Hou; C. Hu; H.M. Hu; T. Hu; Y. Hu; G.S. Huang; J.S. Huang; X.T. Huang; X.Z. Huang; Z.L. Huang; T. Hussain; W. Ikegami Andersson; Q. Ji; Q.P. Ji; X.B. Ji; X.L. Ji; L.W. Jiang; X.S. Jiang; X.Y. Jiang; J.B. Jiao; Z. Jiao; D.P. Jin; S. Jin; T. Johansson; A. Julin; N. Kalantar-Nayes...; X.L. Kang; X.S. Kang; M. Kavatsyuk; B.C. Ke; P. Kiese; R. Kliemt; B. Kloss; O.B. Kolcu; B. Kopf; M. Kornicer; A. Kupsc; W. Kühn; J.S. Lange; M. Lara; P. Larin; H. Leithoff; C. Leng; C. Li; Cheng Li; D.M. Li; F. Li; F.Y. Li; G. Li; H.B. Li; H.J. Li; J.C. Li; Jin Li; K. Li; K. Li; Lei Li; P.R. Li; Q.Y. Li; T. Li; W.D. Li; W.G. Li; X.L. Li; X.N. Li; X.Q. Li; Y.B. Li; Z.B. Li; H. Liang; Y.F. Liang; Y.T. Liang; G.R. Liao; D.X. Lin; B. Liu; B.J. Liu; C.X. Liu; D. Liu; F.H. Liu; Fang Liu; Feng Liu; H.B. Liu; H.H. Liu; H.H. Liu; H.M. Liu; J. Liu; J.B. Liu; J.P. Liu; J.Y. Liu; K. Liu; K.Y. Liu; L.D. Liu; P.L. Liu; Q. Liu; S.B. Liu; X. Liu; Y.B. Liu; Y.Y. Liu; Z.A. Liu; Zhiqing Liu; H. Loehner; Y.F. Long; X.C. Lou; H.J. Lu; J.G. Lu; Y. Lu; Y.P. Lu; C.L. Luo; M.X. Luo; T. Luo; X.L. Luo; X.R. Lyu; F.C. Ma; H.L. Ma; L.L. Ma; M.M. Ma; Q.M. Ma; T. Ma; X.N. Ma; X.Y. Ma; Y.M. Ma; F.E. Maas; M. Maggiora; Q.A. Malik; Y.J. Mao; Z.P. Mao; S. Marcello; J.G. Messchendorp; G. Mezzadri; J. Min; T.J. Min; R.E. Mitchell; X.H. Mo; Y.J. Mo; C. Morales Morales; G. Morello; N.Yu. Muchnoi; H. Muramatsu; P. Musiol; Y. Nefedov; F. Nerling; I.B. Nikolaev; Z. Ning; S. Nisar; S.L. Niu; X.Y. Niu; S.L. Olsen; Q. Ouyang; S. Pacetti; Y. Pan; P. Patteri; M. Pelizaeus; H.P. Peng; K. Peters; J. Pettersson; J.L. Ping; R.G. Ping; R. Poling; V. Prasad; H.R. Qi; M. Qi; S. Qian; C.F. Qiao; L.Q. Qin; N. Qin; X.S. Qin; Z.H. Qin; J.F. Qiu; K.H. Rashid; C.F. Redmer; M. Ripka; G. Rong; Ch. Rosner; X.D. Ruan; A. Sarantsev; M. Savrié; C. Schnier; K. Schoenning; W. Shan; M. Shao; C.P. Shen; P.X. Shen; X.Y. Shen; H.Y. Sheng; W.M. Song; X.Y. Song; S. Sosio; S. Spataro; G.X. Sun; J.F. Sun; S.S. Sun; X.H. Sun; Y.J. Sun; Y.Z. Sun; Z.J. Sun; Z.T. Sun; C.J. Tang; X. Tang; I. Tapan; E.H. Thorndike; M. Tiemens; I. Uman; G.S. Varner; B. Wang; B.L. Wang; D. Wang; D.Y. Wang; K. Wang; L.L. Wang; L.S. Wang; M. Wang; P. Wang; P.L. Wang; W. Wang; W.P. Wang; X.F. Wang; Y. Wang; Y.D. Wang; Y.F. Wang; Y.Q. Wang; Z. Wang; Z.G. Wang; Z.H. Wang; Z.Y. Wang; Z.Y. Wang; T. Weber; D.H. Wei; P. Weidenkaff; S.P. Wen; U. Wiedner; M. Wolke; L.H. Wu; L.J. Wu; Z. Wu; L. Xia; L.G. Xia; Y. Xia; D. Xiao; H. Xiao; Z.J. Xiao; Y.G. Xie; Y.H. Xie; Q.L. Xiu; G.F. Xu; J.J. Xu; L. Xu; Q.J. Xu; Q.N. Xu; X.P. Xu; L. Yan; W.B. Yan; W.C. Yan; Y.H. Yan; H.J. Yang; H.X. Yang; L. Yang; Y.X. Yang; M. Ye; M.H. Ye; J.H. Yin; Z.Y. You; B.X. Yu; C.X. Yu; J.S. Yu; C.Z. Yuan; Y. Yuan; A. Yuncu; A.A. Zafar; Y. Zeng; Z. Zeng; B.X. Zhang; B.Y. Zhang; C.C. Zhang; D.H. Zhang; H.H. Zhang; H.Y. Zhang; J. Zhang; J.J. Zhang; J.L. Zhang; J.Q. Zhang; J.W. Zhang; J.Y. Zhang; J.Z. Zhang; K. Zhang; L. Zhang; S.Q. Zhang; X.Y. Zhang; Y. Zhang; Y. Zhang; Y.H. Zhang; Y.N. Zhang; Y.T. Zhang; Yu Zhang; Z.H. Zhang; Z.P. Zhang; Z.Y. Zhang; G. Zhao; J.W. Zhao; J.Y. Zhao; J.Z. Zhao; Lei Zhao; Ling Zhao; M.G. Zhao; Q. Zhao; Q.W. Zhao; S.J. Zhao; T.C. Zhao; Y.B. Zhao; Z.G. Zhao; A. Zhemchugov; B. Zheng; J.P. Zheng; W.J. Zheng; Y.H. Zheng; B. Zhong; L. Zhou; X. Zhou; X.K. Zhou; X.R. Zhou; X.Y. Zhou; K. Zhu; K.J. Zhu; S. Zhu; S.H. Zhu; X.L. Zhu; Y.C. Zhu; Y.S. Zhu; Z.A. Zhu; J. Zhuang; L. Zotti; B.S. Zou; J.H. Zou
• Keywords: BARYON-ANTIBARYON PAIRS;; BESIII, детектор; Physics; QC1-999; ddc:530; 530; 01 natural sciences; DECAYS; Angular distribution; Branching fraction; Charmonium; Nuclear and High Energy Physics; BEPCII, коллайдер; угловые распределения; 0103 physical sciences; Branching fraction; чармоний; Angular distribution; Charmonium

We study the decays of J/ψ and ψ(3686) to the final states Σ(1385)0Σ¯(1385)0 and Ξ0Ξ¯0 based on a single baryon tag method using data samples of (1310.6±7.0)×106 J/ψ and (447.9±2.9)×106 ψ(3686) events collected with the BESIII detector at the BEPCII collider. The decays to Σ(1385)0Σ¯(1385)0 are observed for the first time. The measured branching fractions of J/ψ and ψ(3686) to Ξ0Ξ¯0 are in good agreement with, and much more precise than, the previously published results. The angular parameters for these decays are also measured for the first time. The measured angular decay parameter for J/ψ→Σ(1385)0Σ¯(1385)0, α=−0.64±0.03±0.10, is found to be negative, different to the other decay processes in this measurement. In addition, the “12% rule” and isospin symmetry in the decays of J/ψ and ψ(3686) to ΞΞ¯ and Σ(1385)Σ¯(1385) are tested.