Measurement of the branching fractions for [formula omitted] and [formula omitted

M Ablikim,J Fang,M He,Y Zeng,J Nie,Feng Liu,Jin Chen,X Wan,Fang Liu,Y Yuan,G Rong,Y Bai,X Tang,Y Ban,Q Liu,B Zhong,S Jin,T Hu,Y.Y Zhang,D P Jin ,R G Ping ,Z.X Zhang,R.Y Li,Y Gao ,J Li,Q M Zhu ,B.Y Zhang,D H Wei ,X P Xu ,Mu-Lin Yan ,Y Xu,H.Y Zhang,Gouhui Li ,W.G Li,J.W Zhang,H Sun ,X B Ji ,Y Huang ,X.D Chen,Y T Gu ,Cai X ,J Tian ,Yifan Yang ,K Zhu ,H X Yang ,Y P Chu ,S L Olsen ,X M Xia ,B.J Liu,C P Shen ,B A Zhuang ,Z Zhao ,J Liu,N D Qi ,Z A Zhu ,Han-Qing Zheng ,Y N Guo ,L.L Wang,G Varner ,G S Huang ,C.D Fu,C S Gao ,Z.L Zhu,L Wang,Wei Chen ,J P Zheng ,Z J Guo ,Z J Sun ,H.X Chen,Y K Heng ,P P Zhao ,M Yang,X S Jiang ,L.S Wang,Dongxu Zhao ,X.Q Li,J B Jiao ,Y.B Chen,X Zhu ,Qiang Ma ,M.H Ye,L Shang,H.L Ma,C Z Yuan ,H Y Sheng ,L Li,C.C Zhang,H.S Chen,C X Yu ,Jiawei Zhao ,Zong‐Wen Liu ,M Q A Malik ,G R Lu ,H.M Liu,X.N Li,P.L Wang,Y.X Ye,C.X Liu,G F Xu ,J.Y Zhang,L Y Shan ,F.C Ma,Z P Zheng ,Y.F Wang,Y S Zhu ,S Gu ,J Z Bai ,B.X Zhang,J G Lu ,Z P Mao ,X.Y Zhang,H M Hu ,Nengyou Wu ,Zhou Li ,J F Qiu ,Y Z Sun ,Z Y Deng ,Y F Liang ,H.B Li,X T Huang ,K L He ,Z Wang,J.C Chen,G L Tong ,X Y Shen ,H.F Chen,J.P Liu,P Wang,Suo Liu ,F A Harris ,X H Mo ,Z.P Zhang,Z.Y Wang,Y S Dai ,M G Zhao ,H.B Liu,S X Du ,H.Q Zhang,X.L Li,F X Lu ,S S Sun ,C L Luo ,R.G Liu,D.H Zhang,X D Ruan ,W.D Li,B Zheng,B S Zou

doi:10.1016/j.physletb.2009.04.066

Measurement of the branching fractions for [formula omitted] and [formula omitted

M Ablikim, J Fang + Show 146 more

Open Access

https://doi.org/10.1016/j.physletb.2009.04.066

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Journal: Physics Letters B	Publication Date: May 4, 2009
Citations: 4	License type: cc-by

Affiliation: Institute of High Energy Physics, Tsinghua University, Central China Normal University, Peking University, University of Hawaii System, Henan Normal University, Zhejiang University, University of Science and Technology of China

#Beijing Electron Positron Collider #Soft-pion Theorem + Show 3 more

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Abstract

Using 58×106J/ψ events collected with the Beijing Spectrometer (BESII) at the Beijing Electron Positron Collider (BEPC), the branching fractions of J/ψ to pp¯η and pp¯η′ are determined. The ratio Γ(J/ψ→pp¯η)Γ(J/ψ→pp¯) obtained by this analysis agrees with expectations based on soft-pion theorem calculations.

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