Energy and Centrality Dependences of Pseudorapidity Distributions of Charged Particles in Cu＋Cu Collisions at High Energies

JIANG Zhi-jin; SUN Yu-fen

doi:10.11804/NuclPhysRev.27.04.421

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JIANG Zhi-jin, SUN Yu-fen. Energy and Centrality Dependences of Pseudorapidity Distributions of Charged Particles in Cu＋Cu Collisions at High Energies[J]. Nuclear Physics Review, 2010, 27(4): 421-425. doi: 10.11804/NuclPhysRev.27.04.421

Citation:

JIANG Zhi-jin, SUN Yu-fen. Energy and Centrality Dependences of Pseudorapidity Distributions of Charged Particles in Cu＋Cu Collisions at High Energies[J]. Nuclear Physics Review, 2010, 27(4): 421-425. doi: 10.11804/NuclPhysRev.27.04.421

Energy and Centrality Dependences of Pseudorapidity Distributions of Charged Particles in Cu＋Cu Collisions at High Energies

doi: 10.11804/NuclPhysRev.27.04.421

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: 2010-12-20

Abstract

Using Glauber model， we present the impact parameter dependences of the numbers of participants and binary nucleon-nucleon collisions in nucleus-nucleus collisions. Then， on the basis of this work，after considering the effect of energy loss of participants in their multiple collisions，we get the pseudorapidity distributions of charged-particles as a function of impact parameter in nucleus-nucleus collisions through weighted superposition of the distributions in effective binary nucleon-nucleon collisions. The experimental measurements carried out by RHIC PHOBOS Collaboration in different central Cu+Cu collisions at different energies were analyzed by using this model. The theoretical results are well consistent with the experimental observations
- Glauber model,
- spectator,
- binary nucleon-nucleon collision
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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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Energy and Centrality Dependences of Pseudorapidity Distributions of Charged Particles in Cu＋Cu Collisions at High Energies

doi: 10.11804/NuclPhysRev.27.04.421

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: 2010-12-20

Key words:

Abstract: Using Glauber model， we present the impact parameter dependences of the numbers of participants and binary nucleon-nucleon collisions in nucleus-nucleus collisions. Then， on the basis of this work，after considering the effect of energy loss of participants in their multiple collisions，we get the pseudorapidity distributions of charged-particles as a function of impact parameter in nucleus-nucleus collisions through weighted superposition of the distributions in effective binary nucleon-nucleon collisions. The experimental measurements carried out by RHIC PHOBOS Collaboration in different central Cu+Cu collisions at different energies were analyzed by using this model. The theoretical results are well consistent with the experimental observations

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