高能Pb-Pb碰撞中产生的奇异粒子的横质量分布(英文)

Transverse Mass Distributions of Strange Particles Produced in PbPb Collisions at High Energies

摘要: 基于三火球模型，用蒙特卡罗方法计算了40和158 AGeV能量下Pb-Pb碰撞中产生的Λ, 和Ξ-强子的横质量分布。在计算中发现射弹核火球、中心火球和靶核火球在横向有明显的扩展，并且模型计算的结果与NA49合作组的实验结果相一致。Transverse mass distributions of Λ, , and Ξ- produced in PbPb reactions at
40 and 158 AGeV are described by an expansive threefireball model. A transverse expansion is observed in our calculation. The calculated results, by the expansive threefireball model, are in agreement with the experimental data of NA49 Collaboration.

Abstract: Transverse mass distributions of Λ, , and Ξ- produced in PbPb reactions at
40 and 158 AGeV are described by an expansive threefireball model. A transverse expansion is observed in our calculation. The calculated results, by the expansive threefireball model, are in agreement with the experimental data of NA49 Collaboration.