Temperature and Transverse Expansion of Fireballs in Pb+Pb Collisions at the LHC

Abstract

We analyze hadron transverse momentum spectra from Pb+Pb Collisions recorded by the LHC detector ALICE. As the theoretical model we use a Monte Carlo model which includes production and decays of resonances. The transverse expansion of the fireball is shown to be stronger and the freeze-out temperature higher than in similar collisions at RHIC, where collision energy is more than ten times lower.

Keywords

• heavy ion collisions
• quark-gluon plasma
• transverse expansion
• freeze-out temperature
• particle spectra