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修正的Landau 流体力学模型与Cu+Cu 碰撞末态带电粒子赝快度分布

姜志进 李庆广 张海利

姜志进, 李庆广, 张海利. 修正的Landau 流体力学模型与Cu+Cu 碰撞末态带电粒子赝快度分布[J]. 原子核物理评论, 2013, 30(1): 26-31. doi: 10.11804/NuclPhysRev.30.01.026
引用本文: 姜志进, 李庆广, 张海利. 修正的Landau 流体力学模型与Cu+Cu 碰撞末态带电粒子赝快度分布[J]. 原子核物理评论, 2013, 30(1): 26-31. doi: 10.11804/NuclPhysRev.30.01.026
JIANG Zhi- jin, LI Qing-guang, ZHANG Hai-li. Revised Landau Hydrodynamic Model and Pseudorapidity Distributions of Final Charged Particles in Cu+Cu Collisions[J]. Nuclear Physics Review, 2013, 30(1): 26-31. doi: 10.11804/NuclPhysRev.30.01.026
Citation: JIANG Zhi- jin, LI Qing-guang, ZHANG Hai-li. Revised Landau Hydrodynamic Model and Pseudorapidity Distributions of Final Charged Particles in Cu+Cu Collisions[J]. Nuclear Physics Review, 2013, 30(1): 26-31. doi: 10.11804/NuclPhysRev.30.01.026

修正的Landau 流体力学模型与Cu+Cu 碰撞末态带电粒子赝快度分布

doi: 10.11804/NuclPhysRev.30.01.026

Revised Landau Hydrodynamic Model and Pseudorapidity Distributions of Final Charged Particles in Cu+Cu Collisions

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出版历程
  • 收稿日期:  1900-01-01
  • 修回日期:  1900-01-01
  • 刊出日期:  2013-03-20

修正的Landau 流体力学模型与Cu+Cu 碰撞末态带电粒子赝快度分布

doi: 10.11804/NuclPhysRev.30.01.026

摘要: 采用修正的Landau 流体力学模型,并考虑到带头粒子效应,对高能重离子碰撞末态带电粒子的赝快度分布进行了讨论。指出:带头粒子的快度分布应为高斯形式,其正规化常数为参与者数。研究表明:流体力学模型本身与BNL-RHIC-PHOBOS 合作组在(NN)½ =200 GeV 的Cu+Cu 碰撞中的实验测量符合得不是很好,只有将参与者的贡献包括在内,实验结果才能得到很好的描述。By using the revised Landau hydrodynamic model and taking into account the effect of leading particles, we discussed the pseudorapidity distributions of final charged particles in high energy heavy ion collisions. We argued that the rapidity distributions of leading particles have the Gaussian form with the normalization constant being equal to the number of participants. The investigations show that the results from the hydrodynamic model alone are not consistent with the experimental data carried out by BNL-RHIC-PHOBOS Collaboration in Cu+Cu collisions at (NN)½ = 200 GeV. Only after the contributions from leading particles are included, can the experimental measurements be described well.

English Abstract

姜志进, 李庆广, 张海利. 修正的Landau 流体力学模型与Cu+Cu 碰撞末态带电粒子赝快度分布[J]. 原子核物理评论, 2013, 30(1): 26-31. doi: 10.11804/NuclPhysRev.30.01.026
引用本文: 姜志进, 李庆广, 张海利. 修正的Landau 流体力学模型与Cu+Cu 碰撞末态带电粒子赝快度分布[J]. 原子核物理评论, 2013, 30(1): 26-31. doi: 10.11804/NuclPhysRev.30.01.026
JIANG Zhi- jin, LI Qing-guang, ZHANG Hai-li. Revised Landau Hydrodynamic Model and Pseudorapidity Distributions of Final Charged Particles in Cu+Cu Collisions[J]. Nuclear Physics Review, 2013, 30(1): 26-31. doi: 10.11804/NuclPhysRev.30.01.026
Citation: JIANG Zhi- jin, LI Qing-guang, ZHANG Hai-li. Revised Landau Hydrodynamic Model and Pseudorapidity Distributions of Final Charged Particles in Cu+Cu Collisions[J]. Nuclear Physics Review, 2013, 30(1): 26-31. doi: 10.11804/NuclPhysRev.30.01.026

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