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

The multisource thermal model is used in this paper to analyze the antiproton (ρ) production process in high-energy proton-carbon (ρ-C) 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 158GeV/c beam momentum. As a parameter, the nuclear temperature of interacting system extracted from the antiproton spectrum is estimated to be about 150MeV. [ABSTRACT FROM AUTHOR]