Study a_0(980)-f_0(980) mixing in charmonium decays  

作　　者：吴佳俊 赵强 邹冰松 

机构地区：[1]Institute of High Energy Physics,Chinese Academy of Sciences [2]Theoretical Physics Center for Science Facilities,CAS

出　　处：《Chinese Physics C》2010年第6期848-854,共7页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China (10435080,10521003,10675131);Chinese Academy of Sciences Knowledge Innovation Project (KJCX3-SYW-N2)

摘　　要：In this proceeding, we propose to directly measure the a0^0（980）-f0 （980） mixing in J/ψ→φf0（980）→φa0^0（980） and Xc1→π^0a0^0（980） →π^0f0（980） with the upgraded Beijing Electron Positron Collider（BEPCII） with BESIII detector. We show that a narrow peak of about 8 MeV will be produced by the a0^0（980）-f0（980） mixing, and the predominant feature makes it standing out from the background contributions. The predicted branching ratios for these two reactions are both expected to be about O（10^-6）, which is unambiguously accessible with 10^9 J/ψ and 3 × 10^8 Xc1 at BESⅢ.In this proceeding, we propose to directly measure the a0^0（980）-f0 （980） mixing in J/ψ→φf0（980）→φa0^0（980） and Xc1→π^0a0^0（980） →π^0f0（980） with the upgraded Beijing Electron Positron Collider（BEPCII） with BESIII detector. We show that a narrow peak of about 8 MeV will be produced by the a0^0（980）-f0（980） mixing, and the predominant feature makes it standing out from the background contributions. The predicted branching ratios for these two reactions are both expected to be about O（10^-6）, which is unambiguously accessible with 10^9 J/ψ and 3 × 10^8 Xc1 at BESⅢ.

关 键 词：a0^0（980） f0（980） MIXING BES 

分 类 号：O572.33[理学—粒子物理与原子核物理]