摘要
基于BESⅢ合作组的离线软件框架BOSS,利用该合作组产生的1 225 M单举J/Ψ事例,研究在BESⅢ探测器上实现测量到超子辐射稀有衰变过程Ξ(1 530)-→γΞ-的分支比的可能性.以无信号事例的单举J/Ψ事例样本为背景样本,以纯信号蒙特卡罗事例为信号样本,控制信号事例,在分别假设观测到Ξ(1 530)-→γΞ-衰变过程信号显著水平为3σ和5σ的情况下,得到该衰变过程对应的分支比.
Based on BOSS framework of BESIII Collaboration,by using the 1 225 M inclusive J/Ψevents produced by BESIII data production group,the possibility for measuring the branching fraction ofΞ(1530)^-→γΞ^-at BESIII was studied.Taking this 1 225 M inclusive J/Ψevents as background sample and exclusive Monte Carlo sample as signal sample,assuming the signal significant to be 3σand 5σby controlling the signal event,the corresponding branching fractions were obtained.
作者
姬清平
周祎卓
Ji Qingping;Zhou Yizhuo(College of Physics and Materials Science,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
2019年第1期52-57,共6页
Journal of Henan Normal University(Natural Science Edition)
基金
国家自然科学基金(11605042)
中国博士后第62批面上资助项目(2017M622347)
