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Advances in High Energy Physics
Volume 2014, Article ID 293873, 12 pages
http://dx.doi.org/10.1155/2014/293873
Research Article

On Descriptions of Particle Transverse Momentum Spectra in High Energy Collisions

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

Received 6 May 2014; Revised 20 July 2014; Accepted 14 August 2014; Published 28 August 2014

Academic Editor: Edward Sarkisyan-Grinbaum

Copyright © 2014 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. The publication of this article was funded by SCOAP3.

Abstract

The transverse momentum spectra obtained in the frame of an isotropic emission source are compared in terms of Tsallis, Boltzmann, Fermi-Dirac, and Bose-Einstein distributions and the Tsallis forms of the latter three standard distributions. It is obtained that, at a given set of parameters, the standard distributions show a narrower shape than their Tsallis forms which result in wide and/or multicomponent spectra with the Tsallis distribution in between. A comparison among the temperatures obtained from the distributions is made with a possible relation to the Boltzmann temperature. An example of the angular distributions of projectile fragments in nuclear collisions is given.