Description of high-energy<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>p</mml:mi><mml:mi>p</mml:mi></mml:mrow></mml:math>collisions using Tsallis thermodynamics: Transverse momentum and rapidity distributions

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 $68\ifmmode\pm\else\textpm\fi{}5\text{ }\mathrm{MeV}$ 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 $q\text{ }\ensuremath{\approx}1.146$. 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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