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Advances in High Energy Physics
Volume 2013, Article ID 324075, 6 pages
http://dx.doi.org/10.1155/2013/324075
Research Article

On Antiproton Production in 158 GeV/c Proton-Carbon Collisions and Nuclear Temperature of Interacting System

Institute of Theoretical Physics, Shanxi University, Taiyuan, Shanxi 030006, China

Received 28 March 2013; Revised 15 July 2013; Accepted 16 July 2013

Academic Editor: Bhartendu K. Singh

Copyright © 2013 Fu-Hu Liu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The multisource thermal model is used in this paper to analyze the antiproton ( ) production process in high-energy proton-carbon ( ) collisions. The transverse momentum, Feynman variable, and rapidity distributions of antiprotons in the nucleon-nucleon center-of-mass system are calculated by using the model. The modeling results are compared and found to be in agreement with the experimental data measured by the NA49 Collaboration at 158 GeV/c beam momentum. As a parameter, the nuclear temperature of interacting system extracted from the antiproton spectrum is estimated to be about 150 MeV.