BESⅢ测量Ξ(1530)^-→γΞ^-的蒙特卡洛研究  

Monte Carlo study of measurement of Ξ(1 530)^-→γΞ^- at BESⅢ

作　　者：姬清平 周祎卓 Ji Qingping;Zhou Yizhuo(College of Physics and Materials Science,Henan Normal University,Xinxiang 453007,China)

机构地区：[1]河南师范大学物理与材料科学学院,河南新乡453007

出　　处：《河南师范大学学报（自然科学版）》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)

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.

关 键 词：超子辐射衰变 BESIII探测器 蒙特卡洛研究 分支比 

分 类 号：O413[理学—理论物理]