Abstract
High-multiplicity proton-proton (pp) collisions at the Large Hadron Collider (LHC) energies have created a new domain of research to look for a possible formation of quark–gluon plasma in these events. In this paper, we estimate various thermal properties of the matter formed in pp collisions at the LHC energies, such as mean free path, isobaric expansivity, thermal pressure, and heat capacity using a thermodynamically consistent Tsallis distribution function. Particle species-dependent mean free path and isobaric expansivity are studied as functions of final state charged particle multiplicity for pp collisions at the center-of-mass energy s = 7 TeV. The effects of degree of non-extensivity, baryochemical potential, and temperature on these thermal properties are studied. The findings are compared with the theoretical expectations.
Highlights
One of the many astounding revelations of 20th century physics is the relatively new state of matter called quark–gluon plasma (QGP), expected to be formed in ultra-relativistic heavy-ion collisions
The observations of heavy-ion-like features in high-multiplicity proton-proton collisions at the Large Hadron Collider energies and the corresponding explanations using different tunes in Perturbative QCD (pQCD)-inspired Monte Carlo model such as PYTHIA8 have warranted a deeper look into these events
We estimated various thermal properties of the matter formed in high-energy proton-proton collisions, such as mean free path, λ, isobaric expansivity, α, thermal pressure, ∂T
Summary
One of the many astounding revelations of 20th century physics is the relatively new state of matter called quark–gluon plasma (QGP), expected to be formed in ultra-relativistic heavy-ion collisions. √ Tsallis distribution fit to the p⊥ -spectra of pp collisions at the centre-of-mass energy s = 7 TeV, we extracted thermodynamical parameters such as temperature, T, and the non-extensive parameter, q, which were used to find the particle species-dependent mean free path and isobaric expansivity of the hadronic system formed in pp collisions.
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