https://doi.org/10.1140/epja/i2017-12301-y
Regular Article - Theoretical Physics
Systematic comparison of Tsallis statistics for charged pions produced in pp collisions
1
Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, Dubna, Russia
2
Department of Theoretical Physics, Horia Hulubei National Institute of Physics and Nuclear Engineering, Bucharest-Magurele, Romania
3
UCT-CERN Research Centre and Department of Physics, University of Cape Town, Cape Town, South Africa
* e-mail: jean.cleymans@gmail.com
Received:
10
September
2016
Accepted:
28
April
2017
Published online:
22
May
2017
The energy dependence of Tsallis statistics parameters is presented for charged pions produced at beam energies ranging between 6.3GeV and 7TeV. It is found that deviations from Boltzmann statistics are monotonically growing with beam energy. The energy dependence of the parameters T and q of the negatively charged pions in the energy range GeV reveals that the deviation of the transverse momentum distribution from the exponential becomes more and more pronounced as the beam energy is increased. The parameter q increases with beam energy while the temperature T slowly decreases.
© SIF, Springer-Verlag Berlin Heidelberg, 2017