# QM 2011 - XXII International Conference on Ultrarelativistic Nucleus-Nucleus Collisions

May 22 – 28, 2011
Centre Bonlieu
Europe/Zurich timezone

## Suppression of neutral pion production at large transverse momentum measured with the ALICE experiment in PbPb collisions at $\sqrt{s_{NN}}$=2.76 TeV

May 26, 2011, 4:40 PM
20m
Salle de l'Europe (Centre Bonlieu)

France
Parallel Jets

### Speaker

Dr Gustavo Conesa Balbastre (LPSC - Grenoble)

### Description

The ALICE experiment at the LHC has measured the transverse momentum spectra of neutral mesons via the two photon decay in pp and Pb-Pb collisions at $\sqrt{s_{NN}}$=2.76 TeV over a wide transverse momentum range with different subsystems: with the electromagnetic calorimeters PHOS and EMCAL and via conversions of the photons in the inner material of the experiment to e+e--pairs reconstructed with the Central Tracking System. In this talk, the production of neutral pions in pp and Pb-Pb collisions is compared in terms of the so called nuclear modification factor, $R_{AA}$, for different centrality selections of the Pb-Pb data sample.

### Primary author

Dr Gustavo Conesa Balbastre (LPSC - Grenoble)

 Slides