关键词: 
横质量 /
快度 /
PbPb碰撞 /
多源理想气体模型 /
三火球模型

摘要: 用多源理想气体模型和三火球模型分析并计算了能量在40， 80， 158 AGeV下中心PbPb碰撞中所产生的Λ和强子的横质量分布和快度分布， 发现模型计算的结果与NA49合作组的实验结果相一致。The transverse mass and rapidity distributions of Lambda and Antilambda hyperons produced in central PbPb collisions at 40, 80, and 158 AGeV are described by the multisource ideal gas model and the threefireball model. The results calculated by the models are compared and found to be in agreement with the experimental data of the NA49 Collaboration.