摘要
进一步考虑到本底形状对拟和结果的影响后,给出J/Ψ→Ξ--Ξ+的角分布α=0.52±0.26;利用BE-SII上已有的角分布结果对J/Ψ→Ξ--Ξ+,p-p,Λ-Λ,0Σ-Σ0的电形状因子GBE和磁形状因子GBM的比进行了研究,并与DM2的结果进行了比较.
A new modified formulation of the angular distribution was proposed to fit the data, and one gets a = 0.52± 0. 26 for J/Ψ→Ξ-Ξ＋. The ratio of the electric form factor GE^B to the magnetic one GM^B M for J/Ψ→Ξ^-Ξ^＋,pp,ΛΛ,Σ^0Σ^0 is studied using the results from BESII, and the results compared with the one from DM2.
出处
《河南师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2006年第2期39-41,共3页
Journal of Henan Normal University(Natural Science Edition)
基金
国家自然科学基金资助项目(10305003)
关键词
角分布
J/Ψ衰变
BESII探测器
电形状因子
磁形状因子
angular distribution,J/Ψ decay
BESII detector
the electric form factor
the magnetic form factor
