https://doi.org/10.1140/epja/i2014-14050-9
Regular Article - Theoretical Physics
Transverse mass and rapidity distributions and space dispersion plots of (net-)protons in Pb-Pb collisions at SPS energies
Institute of Theoretical Physics, Shanxi University, Taiyuan, 030006, Shanxi, China
* e-mail: fuhuliu@163.com
Received:
6
December
2013
Revised:
15
January
2014
Accepted:
3
February
2014
Published online:
3
March
2014
The transverse mass and rapidity distributions of (net-)protons produced in Pb-Pb collisions with different centrality intervals at 40A and 158A GeV have been analyzed by using the multisource thermal model in which the whole interacting system and then the sources are described by the Tsallis statistics. The modelling results are in agreement with the experimental data of the NA49 Collaboration. The dispersion plots (or scatter plots) of (net-)protons at the stage of freeze-out in the momentum space, velocity space, and transverse momentum and rapidity space in Pb-Pb collisions at 40A and 158A GeV in different centrality intervals are obtained. We see the differences in density distributions in the dispersion plots for different origins, centrality intervals, and incident energies for the considered collisions.
© SIF, Springer-Verlag Berlin Heidelberg, 2014
