Abstract
The spectra shape of produced charged hadrons on the size of a colliding system is discussed using a two component model. The hierarchy by the system-size in the spectra shape is observed. Next, the hydrodynamic extension of the model is suggested to describe the spectra of charged particles produced in heavy-ion collisions in the full range of transverse momenta, pT. Data from heavy-ion collisions measured at RHIC and LHC are analyzed and combined in terms of energy density.The observed regularities might be explained by the formation of QGP during the collision.
Highlights
A, Te, T, N are the free parameters obtained from the fit to the experimental data
The exponential term stands for the release of ‘thermalized’ particles by the preexisting valence quarks and a quarkgluon cloud coupled to them inside the colliding baryon
The power-law term accounts for the fragmentation of mini-jets formed by the secondary partons produced at the first stage of the collision
Summary
The power-law term accounts for the fragmentation of mini-jets formed by the secondary partons produced at the first stage of the collision. ALICE Collaboration [4] provides data on lead-lead collisions in the range of transverse momentum pT up to 50 GeV.
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