158GeV/c能量下质子-质子相互作用的HBT关联

HBT Correlation in Proton-Proton Collisions at 158 GeV/c

本文利用NA49的158GeV/c能量下的质子—质子相互作用实验数据,系统讨论全同π^+π^+和π^-π^-的HBT(玻色—爱因斯坦)关联的全同玻色子对的关联特征。由实验结果我们发现,高能核作用中,的确存在强HBT关联特征,并分别求出强子HBT关联发射源的大小。对强子发射源大小的研究,可帮助我们深入了解高能核相互作用的动力学机制。

Using the NA49 data of proton-proton collisions at 158 GeV/c, HBT feature of one, and three dimensional of π+ π+ and ;π-π- pairs are provided. From the results of experiment, it is found that a strong HBT correlation feature exists at the high energy heavy ion collisions. The sizes of HBT correlation of hadron emission source are given, which is the key point to study of dynamics mechanism of high energy heavy ion collisions.