First evidence ofΛΛ¯inχcJdecays
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2003
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Abstract
The first observation of χcJ(J=0,1,2) decays to ΛΛ¯ is reported using ψ(2S) data collected with the Beijing Spectrometer detector at the Beijing Electron Positron Collider. The branching ratios are determined to be B(χc0→ΛΛ¯)=(4.7−1.2+1.3±1.0)×10−4, B(χc1→ΛΛ¯)=(2.6−0.9+1.0±0.6)×10−4 and B(χc2→ΛΛ¯)=(3.3−1.3+1.5±0.7)×10−4. The results are compared with model predictions.
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| Authors | J. Z. Bai,Y. Ban,J. G. Bian,X. Cai,J. F. Chang,H. F. Chen,J. Chen,Y. B. Chen,S. P. Chi,Y. P. Chu,X. Z. Cui,Y. M. Dai,L. Y. Dong,S. X. Du,Z. Z. Du,J. Fang,S. S. Fang,C. D. Fu,H. Y. Fu,L. P. Fu,C. S. Gao,M. L. Gao,Y. N. Gao,M. Y. Gong,W. X. Gong,S. D. Gu,Y. N. Guo,Z. J. Guo,S. W. Han,F. A. Harris,J. He,K. L. He,M. He,X. He,Y. K. Heng,T. Hong,H. M. Hu,T. Hu,G. S. Huang,L. Huang,X. P. Huang,X. B. Ji,C. H. Jiang,X. S. Jiang,D. P. Jin,S. Jin,Y. Jin,Z. J. Ke,Y. F. Lai,F. Li,G. Li,H. H. Li,J. Li,K. Li,Q. J. Li,R. B. Li,W. Li,X. Q. Li,C. F. Liu,Fang Liu,H. M. Liu,J. B. Liu,R. G. Liu,Y. Liu,Z. A. Liu,G. R. Lu,H. J. Lu,J. G. Lu,Z. J. Lu,X. L. Luo,E. C. Ma,F. C. Ma,J. M. Ma,Z. P. Mao,X. C. Meng,X. H. Mo,J. Nie,Z. D. Nie,S. L. Olsen,D. Paluselli,H. P. Peng,N. D. Qi,C. D. Qian,J. F. Qiu,G. Rong,D. L. Shen,H. Shen,X. Y. Shen,H. Y. Sheng,F. Shi,L. W. Song,H. S. Sun,S. S. Sun,Y. Z. Sun,Z. J. Sun,S. Q. Tang,X. Tang,D. Tian,Y. R. Tian,G. L. Tong,G. S. Varner,J. Wang,L. Wang,M. Wang,P. Wang,W. F. Wang,Zhe Wang,C. L. Wei,N. Wu,X. M. Xia,X. X. Xie,G. F. Xu,Y. Xu,S. T. Xue,M. L. Yan,W. B. Yan,G. A. Yang,H. X. Yang,J. Yang,S. D. Yang,M. H. Ye,Y. X. Ye,J. Ying,C. S. Yu,G. W. Yu,C. Z. Yuan,J. M. Yuan,Y. Yuan,Q. Yue,S. L. Zang,Y. Zeng,B. X. Zhang,C. C. Zhang,D. H. Zhang,J. Zhang,L. S. Zhang,Q. J. Zhang,S. Q. Zhang,Z. P. Zhang,D. X. Zhao,Jiawei Zhao,P. P. Zhao,W. R. Zhao,Y. B. Zhao,Z. G. Zhao,J. P. Zheng,X. C. Zhong,B. Q. Zhou,G. M. Zhou,L. Zhou,N. F. Zhou,K. J. Zhu,Q. M. Zhu,Yingchun Zhu,Z. A. Zhu,B. A. Zhuang,B. S. Zou;J. Z. Bai;Y. Ban;J. G. Bian;X. Cai;J. F. Chang;H. F. Chen;J. Chen;Y. B. Chen;S. P. Chi;Y. P. Chu;X. Z. Cui;Y. M. Dai;L. Y. Dong;S. X. Du;Z. Z. Du;J. Fang;S. S. Fang;C. D. Fu;H. Y. Fu;L. P. Fu;C. S. Gao;M. L. Gao;Y. N. Gao;M. Y. Gong;W. X. Gong;S. D. Gu;Y. N. Guo;Z. J. Guo;S. W. Han;F. A. Harris;J. He;K. L. He;M. He;X. He;Y. K. Heng;T. Hong;H. M. Hu;T. Hu;G. S. Huang;L. Huang;X. P. Huang;X. B. Ji;C. H. Jiang;X. S. Jiang;D. P. Jin;S. Jin;Y. Jin;Z. J. Ke;Y. F. Lai;F. Li;G. Li;H. H. Li;J. Li;K. Li;Q. J. Li;R. B. Li;W. Li;X. Q. Li;C. F. Liu;Fang Liu;H. M. Liu;J. B. Liu;R. G. Liu;Y. Liu;Z. A. Liu;G. R. Lu;H. J. Lu;J. G. Lu;Z. J. Lu;X. L. Luo;E. C. Ma;F. C. Ma;J. M. Ma;Z. P. Mao;X. C. Meng;X. H. Mo;J. Nie;Z. D. Nie;S. L. Olsen;D. Paluselli;H. P. Peng;N. D. Qi;C. D. Qian;J. F. Qiu;G. Rong;D. L. Shen;H. Shen;X. Y. Shen;H. Y. Sheng;F. Shi;L. W. Song;H. S. Sun;S. S. Sun;Y. Z. Sun;Z. J. Sun;S. Q. Tang;X. Tang;D. Tian;Y. R. Tian;G. L. Tong;G. S. Varner;J. Wang;L. Wang;M. Wang;P. Wang;W. F. Wang;Zhe Wang;C. L. Wei;N. Wu;X. M. Xia;X. X. Xie;G. F. Xu;Y. Xu;S. T. Xue;M. L. Yan;W. B. Yan;G. A. Yang;H. X. Yang;J. Yang;S. D. Yang;M. H. Ye;Y. X. Ye;J. Ying;C. S. Yu;G. W. Yu;C. Z. Yuan;J. M. Yuan;Y. Yuan;Q. Yue;S. L. Zang;Y. Zeng;B. X. Zhang;C. C. Zhang;D. H. Zhang;J. Zhang;L. S. Zhang;Q. J. Zhang;S. Q. Zhang;Z. P. Zhang;D. X. Zhao;Jiawei Zhao;P. P. Zhao;W. R. Zhao;Y. B. Zhao;Z. G. Zhao;J. P. Zheng;X. C. Zhong;B. Q. Zhou;G. M. Zhou;L. Zhou;N. F. Zhou;K. J. Zhu;Q. M. Zhu;Yingchun Zhu;Z. A. Zhu;B. A. Zhuang;B. S. Zou; |
| Journal | physical review d |
| Year | 2003 |
| DOI |
10.1103/physrevd.67.112001
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| URL | |
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