摘要
采用PQCD方法,对C宇称破缺的J/ψ→πη,πη′,ηη′过程,以及奇异量子数不守恒的J/ψ→πK,Kη,Kη′过程进行了唯象学研究,结合BESIII实验和STCF实验进展进行了讨论,结果显示这些弱作用过程的分支比很小,无法在BESIII实验上被探测到,J/ψ→ηη′过程的分支在10^(-11)量级,有可能被未来的STCF实验观测到.
Inspired by high statistical data of J/ψ events at BESIII and future STCF experiments,the C parity violating J/ψ→πη,πη′,ηη′ decays and strangeness changing J/ψ→πK,Kη,Kη′ decays are studied using the perturbative QCD approach.It is found that branching ratios for these weak decays are tiny and out of reach of BESIII detector,and that the J/ψ→ηη′ decay with branching ratio about 10~(-11) might be accessed at the future STCF experiments.
作者
李佳芝
李康
孙怡心
常钦
杨悦玲
Li Jiazhi;Li Kang;Sun Yixin;Chang Qin;Yang Yueling(School of Physics,Henan Normal University,Xinxiang 453007,China;College of Electronic and Electrical Engineering,Henan Normal University,Xinxiang 453007,China)
出处
《河南师范大学学报（自然科学版）》
CAS
北大核心
2023年第5期102-106,共5页
Journal of Henan Normal University(Natural Science Edition)
基金
国家自然科学基金(11875122,12275067,12275068)
河南省自然科学基金(222300420479)
河南省杰出青年科学基金(212300410010)。
