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

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

## D meson nuclear modification factors in PbPb collisions at $\sqrt{s_{NN}}=2.76~{\rm TeV}$, measured with the ALICE detector

May 27, 2011, 3:00 PM
20m
Rotonde de l'Europe (Imperial Palace)

### Rotonde de l'Europe

#### Imperial Palace

Allée Impérial 74000 Annecy, France Tél. : +33 4 50 09 30 00
Parallel Heavy flavor and quarkonia production

### Speaker

Dr Andrea Rossi (Sezione di Padova (INFN)-Universita e INFN)

### Description

The comparison of heavy flavour production in proton-proton and heavy-ion collisions allows to probe the properties of the high-density QCD medium formed in the latter and to study the mechanism of in-medium partonic energy loss. The ALICE experiment has measured the D meson production in pp and Pb--Pb collisions at the LHC at $\sqrt{s}=7$ and $2.76~{\rm TeV}$ and $\sqrt{s_{NN}} = 2.76~{\rm TeV}$ respectively, via the exclusive reconstruction of hadronic decay channels. The D meson decay vertices, displaced by few hundred microns from the main interaction point, are selected by exploiting the high-resolution tracking performance and the hadron identification capabilities of the ALICE detectors. The analyses of the ${\rm D^{0} \rightarrow K^{-}\pi^{+}}$ and ${\rm D^{+} \rightarrow K^{-}\pi^{+}\pi^{+}}$ channels will be described and the preliminary results for the ${\rm D^{0}}$ and ${\rm D^{+}}$ nuclear modification factor will be presented.

### Primary author

Dr Andrea Rossi (Sezione di Padova (INFN)-Universita e INFN)

 Slides