Journal
PHYSICAL REVIEW D
Volume 91, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.91.054025
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A systematic analysis of transverse momentum and rapidity distributions measured in high-energy proton- proton ( pp) collisions for energies ranging from 53 GeV to 7 TeV using Tsallis thermodynamics is presented. The reasonable description of all transverse momentum spectra obtained in earlier analyses is confirmed and extended. All energies can be described by a single Tsallis temperature of 68 5 MeV at all beam energies and particle types investigated ( 43 in total). The value of the entropic index, q, shows a wider spread but is always close to q 1.146. These values are then used to describe the rapidity distributions using a superposition of two Tsallis fireballs along the rapidity axis. It is concluded that the hadronic system created in high- energy pp collisions between 53 GeV and 7 TeV can be seen as obeying Tsallis thermodynamics.
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