Particle spectra in Pb-Pb collisions at 2.76 TeV

TL;DR

This study uses a (3+1)-D viscous hydrodynamic model to analyze particle spectra in Pb-Pb collisions at 2.76 TeV, showing good agreement with experimental data but highlighting some discrepancies in particle ratios and yields.

Contribution

The paper applies a detailed viscous hydrodynamic model to simulate particle production in heavy-ion collisions at LHC energies, providing insights into spectral shapes and particle ratios.

Findings

Spectral shapes agree with ALICE data

Proton/pion ratio is slightly overpredicted

Strange baryon yields are underpredicted

Abstract

Particle production in Pb-Pb collisions at 2.76 TeV is studied in the (3+1)-dimensional viscous hydrodynamic model. The shapes of the calculated transverse momentum spectra of pions, kaons, protons, Xis, and Omegas are in satisfactory agreement with preliminary data of the ALICE Collaboration, while the particle ratio proton/pion is slightly overpredicted, and the strange barion yields are underpredicted.