Improved Measurements of Branching Fractions for Ηc→ϕϕ and Ωϕ

M. Ablikim,M. N. Achasov,X. C. Ai,O. Albayrak,M. Albrecht,D. J. Ambrose,A. Amoroso,F. F. An,Q. An,J. Z. Bai,R. Baldini Ferroli,Y. Ban,D. W. Bennett,J. V. Bennett,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. F. Chang,G. Chelkov,G. Chen,H. S. Chen,H. Y. Chen,J. C. Chen, M. L. Chen,S. Chen,S. J. Chen,X. Chen,X. R. Chen,Y. B. Chen,H. P. Cheng,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,O. Fedorov,F. Feldbauer,G. Felici,C. Q. Feng,E. Fioravanti,M. Fritsch,C. D. Fu, Q. Gao,X. L. Gao,X. Y. 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,T. Held,Y. K. Heng,Z. L. Hou,C. Hu,H. M. Hu,J. F. Hu,T. Hu,Y. Hu,G. S. Huang,J. S. Huang, X. T. Huang,X. Z. Huang,Y. Huang,Z. L. Huang,T. Hussain,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-Nayestanaki,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. Kuehn,J. S. Lange,M. Lara,P. Larin,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,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. 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,Z. A. Liu,Zhiqing Liu,H. Loehner,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,Y. J. Mao,Z. P. Mao,S. Marcello,J. G. Messchendorp,J. Min,T. J. Min,R. E. Mitchell,X. H. Mo,Y. J. Mo, Morales,N. Yu. Muchnoi,H. Muramatsu,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. Savrie,K. Schoenning,S. Schumann,W. Shan,M. Shao,C. P. Shen,P. X. Shen,X. Y. Shen,H. Y. Sheng,M. Shi,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,M. Ullrich,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,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,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,B. X. Yu,C. X. Yu,J. S. Yu,C. Z. Yuan,W. L. Yuan,Y. Yuan,A. Yuncu,A. A. Zafar,A. Zallo,Y. Zeng,Z. Zeng,B. X. Zhang,B. Y. Zhang,C. 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. 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

Physical review D/Physical review D（2017）

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摘要

Using (223.7 +/- 1.4) x 10(6) J / Psi events accumulated with the BESIII detector, we study eta(c) decays to phi phi and omega phi final states. The branching fraction of n(c) -> phi phi is measured to be Br(eta(c) -> phi phi) = (2.5 +/- 0(-0.7)(+0.3) +/- 0.6) X 10(-3,) where the first uncertainty is statistical, the second is systematic, and the third is from the uncertainty of Br(J / Psi -> gamma eta(C)). No significant signal for the double Okubo-Zweig-Iizuka suppressed decay of eta(c) -> omega phi is observed, and the upper limit on the branching fraction is determined to be Br(eta(c) -> omega phi) < 2.5 x 10(-4) at the 90% confidence level.

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