Phys. Rev. D
60,
072001
(1999)
[8 pages]
Study of the hadronic decays of χc states
J. Z. Bai et al. (BES Collaboration)
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J. Z. Bai1, Y. Ban5, J. G. Bian1, I. Blum12, G. P. Chen1, H. F. Chen11, J. Chen3, J. C. Chen1, Y. Chen1, Y. B. Chen1, Y. Q. Chen1, B. S. Cheng1, X. Z. Cui1, H. L. Ding1, L. Y. Dong1, Z. Z. Du1, W. Dunwoodie8, C. S. Gao1, M. L. Gao1, S. Q. Gao1, P. Gratton12, J. H. Gu1, S. D. Gu1, W. X. Gu1, Y. F. Gu1, Y. N. Guo1, S. W. Han1, Y. Han1, F. A. Harris9, J. He1, J. T. He1, K. L. He1, M. He6, D. G. Hitlin2, G. Y. Hu1, H. M. Hu1, J. L. Hu1, Q. H. Hu1, T. Hu1, X. Q. Hu1, Y. Z. Huang1, J. M. Izen12, C. H. Jiang1, Y. Jin1, B. D. Jones12, X. Ju1, Z. J. Ke1, M. H. Kelsey2, B. K. Kim12, D. Kong9, Y. F. Lai1, P. F. Lang1, A. Lankford10, C. G. Li1, D. Li1, H. B. Li1, J. Li1, J. C. Li1, P. Q. Li1, R. B. Li1, W. Li1, W. G. Li1, X. H. Li1, X. N. Li1, H. M. Liu1, J. Liu1, R. G. Liu1, Y. Liu1, X. C. Lou12, B. Lowery12, F. Lu1, J. G. Lu1, X. L. Luo1, E. C. Ma1, J. M. Ma1, R. Malchow3, H. S. Mao1, Z. P. Mao1, X. C. Meng1, J. Nie1, S. L. Olsen9, J. Oyang2, D. Paluselli9, L. J. Pan9, J. Panetta2, F. Porter2, N. D. Qi1, X. R. Qi1, C. D. Qian7, J. F. Qiu1, Y. H. Qu1, Y. K. Que1, G. Rong1, M. Schernau10, Y. Y. Shao1, B. W. Shen1, D. L. Shen1, H. Shen1, X. Y. Shen1, H. Y. Sheng1, H. Z. Shi1, X. F. Song1, J. Standifird12, F. Sun1, H. S. Sun1, Y. Sun1, Y. Z. Sun1, S. Q. Tang1, W. Toki3, G. L. Tong1, G. S. Varner9, F. Wang1, L. S. Wang1, L. Z. Wang1, M. Wang1, P. Wang1, P. L. Wang1, S. M. Wang1, T. J. Wang1,*, Y. Y. Wang1, M. Weaver2, C. L. Wei1, Y. G. Wu1, D. M. Xi1, X. M. Xia1, P. P. Xie1, Y. Xie1, Y. H. Xie1, G. F. Xu1, S. T. Xue1, J. Yan1, W. G. Yan1, C. M. Yang1, C. Y. Yang1, J. Yang1, W. Yang3, X. F. Yang1, M. H. Ye1, S. W. Ye11, Y. X. Ye11, C. S. Yu1, C. X. Yu1, G. W. Yu1, Y. H. Yu4, Z. Q. Yu1, C. Z. Yuan1, Y. Yuan1, B. Y. Zhang1, C. C. Zhang1, D. H. Zhang1, Dehong Zhang1, H. L. Zhang1, J. Zhang1, J. W. Zhang1, L. S. Zhang1, Q. J. Zhang1, S. Q. Zhang1, X. Y. Zhang6, Y. Y. Zhang1, D. X. Zhao1, H. W. Zhao1, Jiawei Zhao11, J. W. Zhao1, M. Zhao1, W. R. Zhao1, Z. G. Zhao1, J. P. Zheng1, L. S. Zheng1, Z. P. Zheng1, B. Q. Zhou1, G. P. Zhou1, H. S. Zhou1, L. Zhou1, K. J. Zhu1, Q. M. Zhu1, Y. C. Zhu1, Y. S. Zhu1, and B. A. Zhuang1 (BES Collaboration)
1Institute of High Energy Physics, Beijing 100039, People’s Republic of China
2California Institute of Technology, Pasadena, California 91125
3Colorado State University, Fort Collins, Colorado 80523
4Hangzhou University, Hangzhou 310028, People’s Republic of China
5Peking University, Beijing 100871, People’s Republic of China
6Shandong University, Jinan 250100, People’s Republic of China
7Shanghai Jiaotong University, Shanghai 200030, People’s Republic of China
8Stanford Linear Accelerator Center, Stanford, California 94309
9University of Hawaii, Honolulu, Hawaii 96822
10University of California at Irvine, Irvine, California 92717
11University of Science and Technology of China, Hefei 230026, People’s Republic of China
12University of Texas at Dallas, Richardson, Texas 75083-0688
Received 15 December 1998; published 8 September 1999
Hadronic decays of the P-wave spin-triplet charmonium states χcJ(J=0,1,2) are studied using a sample of ψ(2S) decays collected by the BES detector operating at the BEPC storage ring. Branching fractions for the decays χc1→KS0K+π-+c.c., χc0→KS0KS0, χc2→KS0KS0, χc0→φφ, χc2→φφ and χcJ→K+K-K+K- are measured for the first time, and those for χcJ→π+π-π+π-, χcJ→π+π-K+K-, χcJ→π+π-pp̅ and χcJ→3(π+π-) are measured with improved precision. In addition, we determine the masses of the χc0 and ηc to be Mχc0=3414.1±0.6(stat)±0.8(syst) MeV and Mηc=2975.8±3.9(stat)±1.2(syst) MeV.
© 1999 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevD.60.072001
DOI:
10.1103/PhysRevD.60.072001
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