Observation Of P(P)Over-Bar Pi(0) And P(P)Over-Bar Eta In Psi ' Decays M Ablikim , Jz Bai , Y Ban , Jg Bian , X Cai , Jf Chang , Hf Chen , Hs Chen , Hx Chen , Jc Chen , J Chen , J Chen , Ml Chen , Yb Chen , Sp Chi , Yp Chu , Xz Cui , Hl Dai , Ys Dai , Zy Deng , Ly Dong , Qf Dong , Sx Du , Zz Du , J Fang , Ss Fang , Cd Fu , Hy Fu , Cs Gao , Yn Gao , My Gong , Wx Gong , Sd Gu , Yn Guo , Yq Guo , Zj Guo , Fa Harris , Kl He , M He , X He , Yk Heng , Hm Hu , T Hu , Gs Huang , Xp Huang , Xt Huang , Xb Ji , Ch Jiang , Xs Jiang , Dp Jin , S Jin , Y Jin , Y Jin , Yf Lai , F Li , G Li , Hh Li , J Li , Jc Li , Qj Li , Ry Li , Sm Li , Wd Li , Wg Li , Xl Li , Xq Li , Yl Li , Yf Liang , Hb Liao , Cx Liu , F Liu , F Liu , Hh Liu , Hm Liu , J Liu , Jb Liu , Jp Liu , Rg Liu , Za Liu , Zx Liu , F Lu , Gr Lu , Hj Lu , Jg Lu , Cl Luo , Lx Luo , Xl Luo , Fc Ma , Hl Ma , Jm Ma , Ll Ma , Qm Ma , Xb Ma , Xy Ma , Zp Mao , Xh Mo , J Nie , Zd Nie , Sl Olsen , Hp Peng , Nd Qi , Cd Qian , H Qin , Jf Qiu , Zy Ren , G Rong , Ly Shan , L Shang , Dl Shen , Xy Shen , Hy Sheng , F Shi , X Shi , Hs Sun , Jf Sun , Ss Sun , Yz Sun , Zj Sun , X Tang , N Tao , Yr Tian , Gl Tong , Gs Varner , Dy Wang , Jz Wang , K Wang , L Wang , Ls Wang , M Wang , P Wang , Pl Wang , Sz Wang , Wf Wang , Yf Wang , Z Wang , Zy Wang , Z Wang , Z Wang , Cl Wei , Dh Wei , N Wu , Ym Wu , Xm Xia , Xx Xie , B Xin , Gf Xu , H Xu , St Xue , Ml Yan , F Yang , Hx Yang , J Yang , Yx Yang , M Ye , Mh Ye , Yx Ye , Lh Yi , Zy Yi , Cs Yu , Gw Yu , Cz Yuan , Jm Yuan , Y Yuan , Sl Zang , Y Zeng , Y Zeng , Bx Zhang , By Zhang , Cc Zhang , Dh Zhang , Hy Zhang , J Zhang , Jw Zhang , Jy Zhang , Qj Zhang , Sq Zhang , Xm Zhang , Xy Zhang , Yy Zhang , Yy Zhang , Zp Zhang , Zq Zhang , Dx Zhao , Jb Zhao , Jw Zhao , Mg Zhao , Pp Zhao , Wr Zhao , Xj Zhao , Yb Zhao , Zg Zhao , Hq Zheng , Jp Zheng , Ls Zheng , Zp Zheng , Xc Zhong , Bq Zhou , Gm Zhou , L Zhou , Nf Zhou , Kj Zhu , Qm Zhu , Yc Zhu , Ys Zhu , Yc Zhu , Za Zhu , Ba Zhuang , Xa Zhuang , Bs Zou PHYSICAL REVIEW D（2005）
摘要
The processes psi'-> p (p) over bar pi(0) and psi'-> p(p) over bar eta are studied using a sample of 14x10(6) psi(') decays collected with the Beijing Spectrometer at the Beijing Electron-Positron Collider. The branching fraction of psi'-> p (p) over bar pi(0) is measured with improved precision as (13.2 +/- 1.0 +/- 1.5)x10(-5), and psi'-> p(p) over bar eta is observed for the first time with a branching fraction of (5.8 +/- 1.1 +/- 0.7)x10(-5), where the first errors are statistical and the second ones are systematic.
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