Unified Descriptions of Hwa-Bjorken and Landau Relativistic Hydrodynamics and the Pseudorapidity Distributions in High Energy Heavy Ion Collisions

JIANG Zhijin; DENG Haiping; ZHANG Yu; ZHANG Haili

doi:10.11804/NuclPhysRev.32.04.398

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Article Navigation > Nuclear Physics Review > 2015 > 32(4): 398-404

JIANG Zhijin, DENG Haiping, ZHANG Yu, ZHANG Haili. Unified Descriptions of Hwa-Bjorken and Landau Relativistic Hydrodynamics and the Pseudorapidity Distributions in High Energy Heavy Ion Collisions[J]. Nuclear Physics Review, 2015, 32(4): 398-404. doi: 10.11804/NuclPhysRev.32.04.398

Citation:

JIANG Zhijin, DENG Haiping, ZHANG Yu, ZHANG Haili. Unified Descriptions of Hwa-Bjorken and Landau Relativistic Hydrodynamics and the Pseudorapidity Distributions in High Energy Heavy Ion Collisions[J]. Nuclear Physics Review, 2015, 32(4): 398-404. doi: 10.11804/NuclPhysRev.32.04.398

Unified Descriptions of Hwa-Bjorken and Landau Relativistic Hydrodynamics and the Pseudorapidity Distributions in High Energy Heavy Ion Collisions

doi: 10.11804/NuclPhysRev.32.04.398

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

Received Date: 2015-04-14
Accepted Date: 2015-12-20
Rev Recd Date: 2015-04-27
Publish Date: 2015-12-20

Abstract

One of the most important achievements obtained in high energy physics in recent years is the discovery that the matter created in nucleus-nucleus collisions behaves like a nearly perfect fluid. The best tool for describing the expansions of this fluid is relativistic hydrodynamics. By taking into account the contributions of leading particles, this paper discusses the pseudorapidity distributions of charged particles on the basis of a theory of unified description of Hwa-Bjorken and Landau relativistic hydrodynamics. The rapidity distributions of charged particles frozen out from fluid can be obtained analytically from unified hydrodynamics. The rapidity distributions of leading particles are assumed having Gaussian form. Known from a comparison with experimental observations made by LHC-RHIC-PHOBOS Collaboration in Au-Au collisions at = 62.4 and 130 GeV, respectively, the theoretical results are in good accordance with experimental results.
- relativistic hydrodynamics,
- 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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Unified Descriptions of Hwa-Bjorken and Landau Relativistic Hydrodynamics and the Pseudorapidity Distributions in High Energy Heavy Ion Collisions

doi: 10.11804/NuclPhysRev.32.04.398

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

Received Date: 2015-04-14
Accepted Date: 2015-12-20
Rev Recd Date: 2015-04-27
Publish Date: 2015-12-20

Key words:

Abstract: One of the most important achievements obtained in high energy physics in recent years is the discovery that the matter created in nucleus-nucleus collisions behaves like a nearly perfect fluid. The best tool for describing the expansions of this fluid is relativistic hydrodynamics. By taking into account the contributions of leading particles, this paper discusses the pseudorapidity distributions of charged particles on the basis of a theory of unified description of Hwa-Bjorken and Landau relativistic hydrodynamics. The rapidity distributions of charged particles frozen out from fluid can be obtained analytically from unified hydrodynamics. The rapidity distributions of leading particles are assumed having Gaussian form. Known from a comparison with experimental observations made by LHC-RHIC-PHOBOS Collaboration in Au-Au collisions at = 62.4 and 130 GeV, respectively, the theoretical results are in good accordance with experimental results.

Citation:

JIANG Zhijin, DENG Haiping, ZHANG Yu, ZHANG Haili. Unified Descriptions of Hwa-Bjorken and Landau Relativistic Hydrodynamics and the Pseudorapidity Distributions in High Energy Heavy Ion Collisions[J]. Nuclear Physics Review, 2015, 32(4): 398-404. doi: 10.11804/NuclPhysRev.32.04.398