First evidence ofΛΛ¯inχcJdecays

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ID: 272830
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
URL
https://sciprofiles.com/publication/view/5f8cf6a4b1c69ef615df1a31f17621b5
Keywords
model beijing branching collider inχcjdecays evidence ofΛΛ χc2

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