【摘要】 给出了相对论重离子碰撞中在关联ｎπ和非关联ｎπ的选取中存在多π关联效应时ｎπ关联函数的一般表达式．用这一表达式研究了计及多π关联效应的小相对动量区域２π干涉学，得到了从３π干涉学分析得到的π源参数与计及多π关联效应后，从２π干涉学分析得到的π源参数的解析关系，与相对论重离子中心碰撞 １． ８Ａ ＧｅＶ Ａｒ＋ Ｐｂ的实验结果进行了对比．更多还原

【Abstract】 A general expression for nπ correlation function is given when there are multi-pion correlations in the choices of correlated nπ and uncorrelated nπ. Using this expression, the two-pion interferometry at small relative momentum which takes account for multi-pion correlations is studied, the relations between the pion source parameters from the two-pion interferometry and the three- pion interferometry are obtained analytically, and comparison is made with the experimental results of central relativistic heavy ion collisions 1. 8 A GeV Ar + Pb.更多还原