A 'soft+hard' model for Pion, Kaon, and Proton Spectra and $v_2$ measured in PbPb Collisions at $\sqrt{s}=2.76A$TeV

Abstract

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 ($v_2$) of charge averaged pions, kaons and protons stemming from central Pb+Pb collisions at $\sqrt{s}$ = 2.76 ATeV are described \textit{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.

References in corpus (3)

• Modified Hagedorn formula including temperature fluctuation - Estimation of temperatures at RHIC experiments -
• Microcanonical Jet-fragmentation in proton-proton collisions at LHC Energy
• A Non-extensive Equilibrium analysis of ${\pi }^{+}$ $p_T$ Spectra at RHIC

Cited by in corpus (7)

• Systematic Analysis of the Non-extensive Statistical Approach in High Energy Particle Collisions - Experiment vs. Theory
• Application of the Non-extensive Statistical Approach to High Energy Particle Collisions
• Different Non-extensive Models for heavy-ion collisions
• Mass hierarchy and energy scaling of the Tsallis--Pareto parameters in hadron productions at RHIC and LHC energies
• Temperature oscillations and sound waves in hadronic matter
• A three component model for hadron $p_{\mathrm{T}}$-spectra in pp and Pb-Pb collisions at the LHC
• Sound waves in hadronic matter