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Advances in High Energy Physics
Volume 2015 (2015), Article ID 741816, 10 pages
Research Article

Tsallis Statistical Interpretation of Transverse Momentum Spectra in High-Energy pA Collisions

Department of Physics, Shanxi University, Taiyuan, Shanxi 030006, China

Received 17 July 2014; Revised 25 August 2014; Accepted 2 September 2014

Academic Editor: Chen Wu

Copyright © 2015 Bao-Chun Li 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. The publication of this article was funded by SCOAP3.


In Tsallis statistics, we investigate charged pion and proton production for pCu and pPb interactions at 3, 8, and 15 GeV/c. Two versions of Tsallis distribution are implemented in a multisource thermal model. A comparison with experimental data of the HARP-CDP group shows that they both can reproduce the transverse momentum spectra, but the improved form gives a better description. It is also found that the difference between q and q′ is small when the temperature T = T′ for the same incident momentum and angular interval, and the value of q is greater than q′ in most cases.