$v_2$ of charged hadrons in a`soft + hard' model for PbPb collisions at $\sqrt s$ = 2.76 ATeV

Abstract

We describe transverse spectra as well as azimuthal anisotropy ($v_2$) of charged hadrons stemming from various centrality PbPb collisions at $\sqrt s$ = 2.76 ATeV 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) and yields stemming from the Quark-Gluon Plasma (soft yields). The hadron spectra in both types of yields are approximated by the Tsallis distribution. It is found that the anisotropy decreases for more central collisions.

Contribution to the proceedings of the conference "Workshop on Particle Correlation and Femtoscopy 2014". https://indico.cern.ch/event/300974/