Study of the hadronic decays of χc states

J. Z. Bai,Y. Ban,J. G. Bian,I. Blum,G. P. Chen,H. F. Chen, J. Chen, J. C. Chen, Y. Chen, Y. B. Chen,Y. Q. Chen,B. S. Cheng,X. Z. Cui,H. L. Ding,L. Y. Dong,W. Dunwoodie,C. S. Gao,M. L. Gao,S. Q. Gao,P. Gratton,J. H. Gu,S. D. Gu,W. X. Gu,Y. F. Gu,Y. N. Guo,S. W. Han,Y. Han,F. A. Harris,J. T. He,K. L. He, M. He,D. G. Hitlin,G. Y. Hu,H. M. Hu,J. L. Hu,Q. H. Hu, T. Hu,X. Q. Hu,Y. Z. Huang, J. M. Izen, C. H. Jiang, Y. Jin,B. D. Jones, Z. J. Ke,M. H. Kelsey,B. K. Kim,D. Kong,Y. F. Lai,P. F. Lang,A. Lankford,C. G. Li,D. Li,H. B. Li,J. Li,P. Q. Li, R. B. Li,W. Li,W. G. Li,X. H. Li,X. N. Li,H. M. Liu,J. Liu,R. G. Liu, Y. Liu,X. C. Lou,B. Lowery,F. Lu,J. G. Lu,X. L. Luo,E. C. Ma,J. M. Ma,R. Malchow,H. S. Mao,Z. P. Mao,X. C. Meng, J. Nie,S. L. Olsen,J. Oyang,D. Paluselli,L. J. Pan,J. Panetta, F. Porter,N. D. Qi,X. R. Qi,C. D. Qian,J. F. Qiu,Y. H. Qu,Y. K. Que,G. Rong, M. Schernau,Y. Y. Shao,B. W. Shen,D. L. Shen,H. Shen,X. Y. Shen,H. Y. Sheng,H. Z. Shi,X. F. Song,J. Standifird,F. Sun,H. S. Sun,Y. Sun,Y. Z. Sun,S. Q. Tang,W. Toki,G. L. Tong,G. S. Varner, F. Wang, L. S. Wang,L. Z. Wang,Meng Wang,P. Wang,P. L. Wang, S. M. Wang,T. J. Wang, Y. Y. Wang,M. Weaver,C. L. Wei,Y. G. Wu,D. M. Xi,X. M. Xia,P. P. Xie, Y. Xie, Y. H. Xie,G. F. Xu,S. T. Xue,J. Yan,W. G. Yan,C. M. Yang,C. Y. Yang,J. Yang,W. Yang,X. F. Yang,M. H. Ye,S. W. Ye,W. Yang,X. Yang,M. Ye,S. Ye,Y. Ye,C. Yu, G. Yu,Y. Yu,Z. Yu,C. Yuan,Y. Yuan,B. Zhang,C. Zhang,D. Zhang,Dehong Zhang,H. Zhang,J. Zhang,L. Zhang,Q. Zhang,S. Zhang,X. Zhang,Y. Zhang,D. Zhao,H. Zhao,Jiawei Zhao,J. Zhao,M. Zhao,W. Zhao,Z. Zhao, J. Zheng, L. Zheng,Z. Zheng, B. Zhou,G. Zhou,H. Zhou,L. Zhou, K. Zhu, Q. Zhu,Y. Zhu,B. Zhuang

PHYSICAL REVIEW D（1999）

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摘要

Hadronic decays of the P-wave spin-triplet charmonium states chi(cJ)(J=0,1,2) are studied using a sample of psi(2S) decays collected by the BES detector operating at the BEPC storage ring. Branching fractions for the decays chi(cl)-->(KSK+)-K-0 pi(-) + c.c., chi(c0)-->(KSKS0)-K-0, chi(c2)-->(KSKS0)-K-0, chi(c0)-->phi phi, chi(c2)-->phi phi and chi(cJ)-->K+K-K+K- are measured for the first time, and those for chi(cJ)-->pi(+)pi(-)pi(+) pi(-), chi(cJ)-->pi(+)pi(-)K(+)K(-), chi(cJ)--> pi(+) pi(-) and chi(cJ) -->3(pi(+) pi(-)) are measured with improved precision. In addition, we determine the masses of the chi(c0) and eta(c) to be M chi(c0) = 3414.1+/-0.6(stat)+/-0.8(syst) MeV and M eta(c) = 2975.8+/-3.9(stat)+/-1.2(syst) MeV. [S0556-2821(99)01119-4].

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