Monte Carlo study of measurement of Ξ(1 530)^-→γΞ^- at BESⅢ
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)
机构地区:
betway官方app 物理与材料科学学院
出处:
《betway官方app 学报:自然科学版》 CAS 北大核心 2019年第1期52-57,共6页
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)
关键词:
超子辐射衰变 BESIII探测器 蒙特卡洛研究 分支比
hyperon rare radiative decay BESIII detector Monte Carlo study branching fraction
分类号:
O413 [理学—理论物理]