摘要
用横向膨胀流体力学模型研究了质心系能量为 s^(1/2)=20GeV 的^(16)O-Au 碰撞的末态π介子的横动量分布,考虑了膨胀气体的成分影响,取更合理的能量密度的初始条件后,和 NA35实验数据比较,其结果虽然比 D.Kusnezov 的计算更较好接近实验数据,但仍不足以完全解释实验.
Using hydrodynamical model of transverse expansion,we investigate the trans- verse momentum distribution of the final state π on^(16)O-Au collisions.When the constituent influence of the gas is taken into account the calculated result fits the NA35 data better than that of D. Knsnezov's.
出处
《高能物理与核物理》
EI
CSCD
北大核心
1997年第1期51-57,共7页
High Energy Physics and Nuclear Physics
关键词
中心快度区
末态横动量分布
Π介子
central rapidity region
final state distribution of transverse momentum
transverse expansion
relativistics hydrodynamics
multiplicity
