A combined model for pseudorapidity distributions in p-pcollisions at center-of-mass energies from 23.6 to 7000 GeV

Zhi-Jin Jiang; Yan Huang; Jie Wang

doi:10.1088/1674-1137/40/7/074104

Chinese Physics C> 2016, Vol. 40> Issue(7) : 074104 DOI: 10.1088/1674-1137/40/7/074104

A combined model for pseudorapidity distributions in p-pcollisions at center-of-mass energies from 23.6 to 7000 GeV

1.
College of Science, University of Shanghai for Science and Technology, Shanghai 200093, China

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Abstract：
In p-p collisions, the charged particles produced consist of two leading particles and those frozen out from the hot and dense matter created in the collisions. The two leading particles are in the projectile and target fragmentation regions, respectively, which, in this paper, are conventionally supposed to have Gaussian rapidity distributions. The hot and dense matter is assumed to expand according to unified hydrodynamics, a hydrodynamic model which unifies the features of the Landau and Hwa-Bjorken models, and freeze out into charged particles from a space-like hypersurface with a fixed proper time of τ_FO. The rapidity distribution of these charged particles can be derived analytically. The combined contribution from both leading particles and unified hydrodynamics is then compared against experimental data from a now available center-of-mass energy region from 23.6 to 7000 GeV. The model predictions are consistent with experimental measurements.
- unified hydrodynamics ,
- leading particle ,
- pseudorapidity distribution

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Zhi-Jin Jiang, Yan Huang and Jie Wang. A combined model for pseudorapidity distributions in p-pcollisions at center-of-mass energies from 23.6 to 7000 GeV[J]. Chinese Physics C, 2016, 40(7): 074104. doi: 10.1088/1674-1137/40/7/074104

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Received: 2015-10-26

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Supported by Hujiang Foundation of China (B14004) and Shanghai Key Lab of Modern Optical System

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沈阳化工大学材料科学与工程学院沈阳 110142

A combined model for pseudorapidity distributions in p-pcollisions at center-of-mass energies from 23.6 to 7000 GeV

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A combined model for pseudorapidity distributions in p-pcollisions at center-of-mass energies from 23.6 to 7000 GeV

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