The decay ψ(2S) →Ω-■+ is analyzed using 14 × 106 ψ(2S) events recorded by the Beijing Spectrometer Ⅱ(BESⅡ) at the Beijing Electron Positron Collider(BEPC).Based upon events with no missing charged tracks and a satisfactory four-constraint kinematic fit,we determine the upper limit for the branching ...
Supported by National Natural Science Foundation of China(10491300,10225524,10225525,10425523,10625524,10521003, 10821063,10825524)
; Chinese Academy of Sciences(KJ 95T-03)
; 100 Talents Program of CAS(U-11,U-24,U-25)
; Knowledge Innovation Project of CAS(U-602,U-34(IHEP))
; National Natural Sci...