The σ pole in J/ ψ→ ωπ + π −

M. Ablikim,J.Z. Bai,Y. Ban,J.G. Bian,D.V. Bugg,X. Cai,J.F. Chang,H.F. Chen,H.S. Chen,H.X. Chen,J.C. Chen,Jin Chen, Jun Chen,M.L. Chen,Y.B. Chen,S.P. Chi,Y.P. Chu,X.Z. Cui,H.L. Dai,Y.S. Dai,Z.Y. Deng,L.Y. Dong,S.X. Du,Z.Z. Du,J. Fang,S.S. Fang,C.D. Fu,H.Y. Fu,C.S. Gao,Y.N. Gao,M.Y. Gong,W.X. Gong,S.D. Gu,Y.N. Guo,Y.Q. Guo,Z.J. Guo,F.A. Harris,K.L. He,M. He,X. He,Y.K. Heng,H.M. Hu,T. Hu,G.S. Huang,L. Huang,X.P. Huang,X.B. Ji,Q.Y. Jia,C.H. Jiang,X.S. Jiang,D.P. Jin,S. Jin,Y. Jin,Y.F. Lai,F. Li,G. Li,H.H. Li,J. Li,J.C. Li,Q.J. Li,R.B. Li,R.Y. Li,S.M. Li,W.G. Li,X.L. Li,X.Q. Li,X.S. Li,Y.F. Liang,H.B. Liao,C.X. Liu,F. Liu,Fang Liu,H.M. Liu,J.B. Liu,J.P. Liu,R.G. Liu,Z.A. Liu,Z.X. Liu,F. Lu,G.R. Lu,J.G. Lu,C.L. Luo,X.L. Luo,F.C. Ma,J.M. Ma,L.L. Ma,Q.M. Ma,X.Y. Ma,Z.P. Mao,X.H. Mo,J. Nie,Z.D. Nie,S.L. Olsen,H.P. Peng,N.D. Qi,C.D. Qian,H. Qin,T.N. Ruan,J.F. Qiu,Z.Y. Ren,G. Rong,L.Y. Shan,L. Shang,D.L. Shen,X.Y. Shen,H.Y. Sheng,F. Shi,X. Shi,H.S. Sun,S.S. Sun,Y.Z. Sun,Z.J. Sun,X. Tang,N. Tao,Y.R. Tian,G.L. Tong,G.S. Varner,D.Y. Wang,J.Z. Wang,K. Wang,L. Wang,L.S. Wang,M. Wang,P. Wang,P.L. Wang,S.Z. Wang,W.F. Wang,Y.F. Wang,Zhe Wang,Z. Wang,Zheng Wang,Z.Y. Wang,C.L. Wei,D.H. Wei,N. Wu,Y.M. Wu,X.M. Xia,X.X. Xie,B. Xin,G.F. Xu,H. Xu,Y. Xu,S.T. Xue,M.L. Yan,F. Yang,H.X. Yang,J. Yang,S.D. Yang,Y.X. Yang,M. Ye,M.H. Ye,Y.X. Ye,L.H. Yi,Z.Y. Yi,C.S. Yu,G.W. Yu,C.Z. Yuan,J.M. Yuan,Y. Yuan,Q. Yue,S.L. Zang,Yu Zeng,Y. Zeng,B.X. Zhang,B.Y. Zhang,C.C. Zhang,D.H. Zhang,H.Y. Zhang,J. Zhang,J.Y. Zhang,J.W. Zhang,L.S. Zhang,Q.J. Zhang,S.Q. Zhang,X.M. Zhang,X.Y. Zhang,Y.J. Zhang,Y.Y. Zhang,Yiyun Zhang,Z.P. Zhang,Z.Q. Zhang,D.X. Zhao,J.B. Zhao,J.W. Zhao,M.G. Zhao,P.P. Zhao,W.R. Zhao,X.J. Zhao,Y.B. Zhao,Z.G. Zhao,H.Q. Zheng,J.P. Zheng,L.S. Zheng,Z.P. Zheng,X.C. Zhong,B.Q. Zhou,G.M. Zhou,L. Zhou,N.F. Zhou,K.J. Zhu,Q.M. Zhu,Y.C. Zhu,Y.S. Zhu,Yingchun Zhu,Z.A. Zhu,B.A. Zhuang,B.S. Zou

user-5dd52aee530c701191bf1b99（2004）

引用 303|浏览16

暂无评分

摘要

Abstract Using a sample of 58 million J / ψ events recorded in the BESII detector, the decay J / ψ → ω π + π − is studied. There are conspicuous ω f 2 ( 1270 ) and b 1 ( 1235 ) π signals. At low ππ mass, a large, broad peak due to the σ is observed, and its pole position is determined to be ( 541 ± 39 ) − i ( 252 ± 42 ) MeV from the mean of six analyses. The errors, which are dominated by the systematic errors, cover the statistical and systematic errors in the six analyses, as well as the observed variation of the six analyses.

查看译文

关键词

Nuclear physics,Physics,Detector,Systematic error

AI 理解论文

溯源树

样例

生成溯源树，研究论文发展脉络

Chat Paper

正在生成论文摘要