Measurements of the observed cross sections for e+e−→ exclusive light hadrons containing π0π<…
M. Ablikim,J. Z. Bai,Y. Bai,Y. Ban,X. Cai,H.F. Chen,H.S. Chen,H.X. Chen,J.C. Chen,Jin Chen,X.D. Chen,Y.B. Chen,Y. P. Chu,Y. S. Dai,Z. Y. Deng,S. X. Du,J. Fang,C. D. Fu,C. S. Gao,Y. Gao,S. Gu,Y. T. Gu,Y. N. Guo,K. L. He,M. He,Y. K. Heng,J. Hou,H. M. Hu,T. Hu,G. S. Huang,X. T. Huang,Y. Huang,X. B. Ji,X. S. Jiang,J. B. Jiao,D. P. Jin,S. Jin,Y. F. Lai,H.B. Li,J. Li,L. Li,R.Y. Li,W.D. Li,W.G. Li,X.L. Li,X.N. Li,X.Q. Li,Y. F. Liang,H. Liao,B.J. Liu,C.X. Liu,Fang Liu,Feng Liu,H.H. Liu,H.M. Liu,J.B. Liu,J.P. Liu,H.B. Liu,J. Liu,R.G. Liu,Suo Liu,Z.A. Liu,F. X. Lu,G. R. Lu,J. G. Lu,C. L. Luo,F.C. Ma,H. L.,L. L.,Qiang Ma,M. Q. A. Malik,Z. P. Mao,X. H. Mo,J. Nie,R. G. Ping,N. D. Qi,H. Qin,J. F. Qiu,G. Rong,X. D. Ruan,L. Y. Shan,L. Shang,D. L. Shen,X. Y. Shen,H. Y. Sheng,H. Sun,S. S. Sun,Y. Z. Sun,Z. J. Sun,X. Tang,J. Tian,G. L. Tong,X. Wan,L. Wang,L.L. Wang,L.S. Wang,P. Wang,P.L. Wang,Wei Wang,Yifei Wang,Z. Wang,Z.Y. Wang,Wei Chen,D. H. Wei,Y. Weng,Nengyou Wu,X. M. Xia,X. X. Xie,G. F. Xu,X. P. Xu,Y. Xu,Mu-Lin Yan,H. X. Yang,Mao-Zhi Yang,Yifan Yang,M.H. Ye,Y.X. Ye,C. X. Yu,G. Yu,C. Z. Yuan,Y. Yuan,S. L. Zang,Y. Zeng,B.X. Zhang,B.Y. Zhang,C.C. Zhang,D.H. Zhang,H.Q. Zhang,H.Y. Zhang,J.W. Zhang,J.Y. Zhang,X.Y. Zhang,Y.Y. Zhang,Z.X. Zhang,Z.P. Zhang,Dongxu Zhao,J. W. Zhao,M. G. Zhao,P. P. Zhao,B. Zheng,Han-Qing Zheng,J. P. Zheng,Z. P. Zheng,B. Zhong,Zhou Li,K. J. Zhu,Q. M. Zhu,X. Zhu,Y. Zhu,Y. S. Zhu,Z. A. Zhu,Z.L. Zhu,B. A. Zhuang,B. S. Zou
Physics Letters B（2008）
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摘要
By analyzing the data sets of 17.3, 6.5 and 1.0 pb−1 taken, respectively, at s=3.773, 3.650 and 3.6648 GeV with the BES-II detector at the BEPC collider, we measure the observed cross sections for e+e−→π+π−π0π0, K+K−π0π0, 2(π+π−π0), K+K−π+π−π0π0 and 3(π+π−)π0π0 at the three energy points. Based on these cross sections we set the upper limits on the observed cross sections and the branching fractions for ψ(3770) decay into these final states at 90% C.L.
