关于全同粒子玻色-爱因斯坦关联的两种能量排序事件比较的研究  

Research on the Comparison of Two Kinds of Energy Sequencing Events Related to Identical Particles BEC

作　　者：胡恒菘 Hu Hengsong(Mianyang Weibo Eelctronic Co.,Ltd.Mianyang City,Sichuan Province.621000)

机构地区：[1]绵阳市维博电子有限责任公司,四川绵阳621000

出　　处：《科学与信息化》2020年第34期191-195,共5页Technology and Information

摘　　要：玻色-爱因斯坦关联(Bose-Einstein correlations,BEC)是一种用来观测粒子发射源空间尺寸的方法。本文将主要研究目标定于目前研究较少的低能区BEC效应,对用于观测BEC效应的事件混合方法提出更加完善的限制条件。本次实验探究主要研究了全同π介子衰变光子能量对事件混合方法的限制条件的影响;研究比较了能量交换序列限制条件和总能量交换序列两种限制条件各自的特点。本文最终得出了如下的结论:①全同π介子衰变光子的能量阈值数值大小与BEC函数图像成正相关;②ESO、EO限制条件分别在Q值较小和较大时效果更好。Bose-Einstein correlations(BEC)is a method for observing the space size of a particle emission source.In this work,the main research target is the BEC effect in the low energy region,which is seldom studied at present.So that when the events are mixed,the correlation required by the experiment can be preserved and Bose-Einstein correlation can be eliminated.This experiment mainly studies the influence of the photon energy of the isotonicπmeson decay on the limiting conditions of the event mixing method.This experiment compares the characteristics of the EO and ESO.In the end,this paper draws the following conclusions.①The energy threshold value of the identicalπmeson decay photon has a positive correlation with the BEC function image.②EO is better when Q is smaller respectively,ESO is better when Q is larger respectively.

关 键 词：玻色-爱因斯坦关联 事件混合方法 限制条件 光子能量阈值 能量排序事件 

分 类 号：O57[理学—粒子物理与原子核物理]