Search for C-parity violation in $J/ \psi \to \gamma\gamma$ and $ \gamma \phi$

M Ablikim,M N Achasov,X C Ai,O Albayrak,Mario Albrecht,D Ambrose,A Amoroso, F F An, Q An, J Z Bai,R Baldini Ferroli, Y Ban,D W Bennett,J V Bennett,M Bertani,D Bettoni,J M Bian,F Bianchi,E Boger, O Bondarenko, I Boyko,Slawomir Braun,R A Briere,Hui Cai,X Cai,O Cakir,A Calcaterra,G F Cao, S A Cetin,J F Chang, G A Chelkov,Guoming Chen,H S Chen,J C Chen,M L Chen,S J Chen,X R Chen,Y B Chen,H P Cheng, X K Chu,Y P Chu,G Cibinetto,D Croninhennessy,H L Dai,J P Dai,D V Dedovich,Z Y Deng,A G Denig, I Denysenko,M Destefanis,F De Mori,Yan Ding,Chen Dong,J Dong,L Y Dong,M Y Dong,S X Du,J Z Fan,Jingyuan Fang,S S Fang,Y Fang, L Fava, F Feldbauer,G Felici, C Q Feng,E Fioravanti, C D Fu,Qian Gao,Y Gao, I Garzia,Chaoqiang Geng,K Goetzen, W X Gong, W Gradl, M Greco, M H Gu,Y T Gu,Y H Guan, A Q Guo,L B Guo,Tao Guo,Y P Guo, Z Haddadi,Shaomei Han,Y L Han,F A Harris,K L He,Z Y He,T Held,Y K Heng,Z L Hou,C Hu,H M Hu,J F Hu, T Hu,G S Huang, H P Huang

PHYSICAL REVIEW D（2014）

引用 3|浏览26

暂无评分

摘要

Using 1.06 x 10(8) psi(3686) events recorded in e(+)e(-) collisions at root s = 3.686 GeV with the BESIII at the BEPCII collider, we present searches for C-parity violation in J/psi -> gamma gamma and gamma phi decays via psi(3686) -> J/psi pi(+)pi(-). No significant signals are observed in either channel. Upper limits on the branching fractions are set to be B(J/psi -> gamma gamma) < 2.7 x 10(-7) and B(J/psi -> gamma phi) < 1.4 x 10(-6) at the 90% confidence level. The former is one order of magnitude more stringent than the previous upper limit, and the latter represents the first limit on this decay channel.

查看译文

关键词

natural sciences,physical sciences

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