Quark Matter 2015 - XXV International Conference on Ultrarelativistic Nucleus-Nucleus Collisions

An Appication of the Non-extensive Phenomena: Soft+Hard Model at Various Energies

29 Sept 2015, 16:30

2h

Exhibition space 3 & 4

Board: 0302

Poster Initial State Physics and Approach to Equilibrium Poster Session

Speaker

Gergely Barnafoldi (Hungarian Academy of Sciences (HU))

Description

Hadron spectra measured in high-energy collisions present distributions which can be derived from the non-extensive statistical and thermodynamical phenomena. Based on earlier theoretical developments, it seems, the methods are very applicable for jets hadronization processes in electron-positron, proton-proton, and even in heavy-ion collisions. Here, we present what can was learnt from the recent theoretical and phenomenological developments: transverse momentum spectra and azimuthal anisotropy (v2) of charge averaged pions, kaons and protons stemming from high-energy collisions form RHIC to LHC energies, which are described analytically in a ‘soft + hard’ model. In this model, we propose that hadron yields produced in heavy-ion collisions are simply the sum of yields stemming from jets (hard yields) in addition to the yields originating from the Quark-Gluon Plasma (soft yields). The hadron spectra in both types of yields are approximated by the Tsallis – Pareto like distribution

Presentation materials

BarnafoldiGG_QM2015_v3.pdf