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

JIANG Zhi- jin; LI Qing-guang; ZHANG Hai-li

doi:10.11804/NuclPhysRev.30.01.026

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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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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

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

doi: 10.11804/NuclPhysRev.30.01.026

College of Science, University of Shanghai for Science and Technology, Shanghai 200093, China

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2013-03-20

Abstract

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.
- revised Landau hydrodynamic model,
- leading particle,
- Gaussian distribution
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

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

doi: 10.11804/NuclPhysRev.30.01.026

College of Science, University of Shanghai for Science and Technology, Shanghai 200093, China

Received Date: 1900-01-01
Rev Recd Date: 1900-01-01
Publish Date: 2013-03-20

Key words:

Abstract: 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.

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