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

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

## Open heavy flavor physics in the muon channel with ALICE in pp collisions at 7 TeV and PbPb at 2.76 TeV

May 23, 2011, 5:50 PM
20m
Salon Ravel AB (ImpErial Palace)

### Salon Ravel AB

#### ImpErial Palace

Parallel Heavy flavor and quarkonia production

### Speaker

Xiaoming Zhang (Laboratoire de Physique Corpusculaire, Clermont-Ferrand)

### Description

Heavy-quark production is one of the probes for the investigation of the properties of the high-density medium formed in heavy-ion collisions. This investigation requires also the study of proton-proton collisions. Besides providing the necessary baseline for nucleus-nucleus collisions, proton-proton collisions are of great interest, also in their own right, since they allow to test perturbative QCD at unprecedented low Bjorken-x values. In this contribution, we measure the heavy-flavour production by detecting single muons from semi-leptonic decays. After a description of the ALICE muon spectrometer, we will present the results on the production of single muons from heavy flavour decays at forward rapidity (2.5 < y < 4) in pp collisions at Heavy-quark production is one of the probes for the investigation of the properties of the high-density medium formed in heavy-ion collisions. This investigation requires also the study of proton-proton collisions. Besides providing the necessary baseline for nucleus-nucleus collisions, proton-proton collisions are of great interest, also in their own right, since they allow to test perturbative QCD at unprecedented low Bjorken-x values. In this contribution, we measure the heavy- avour production by detecting single muons from semi-leptonic decays. After a description of the ALICE muon spectrometer, we will present the results on the production of single muons from heavy avour decays at forward rapidity (2:5 < y < 4) in pp collisions at √s = 7 TeV and Pb-Pb collisions at Heavy-quark production is one of the probes for the investigation of the properties of the high-density medium formed in heavy-ion collisions. This investigation requires also the study of proton-proton collisions. Besides providing the necessary baseline for nucleus-nucleus collisions, proton-proton collisions are of great interest, also in their own right, since they allow to test perturbative QCD at unprecedented low Bjorken-x values. In this contribution, we measure the heavy- avour production by detecting single muons from semi-leptonic decays. After a description of the ALICE muon spectrometer, we will present the results on the production of single muons from heavy avour decays at forward rapidity (2:5 < y < 4) in pp collisions at √s = 7 TeV and Pb-Pb collisions at √sNN = 2.76 TeV. In particular, we will show the pt-dierential production cross section in pp collisions and compare it to perturbative QCD predictions, and the nuclear modication factors in Pb-Pb collisions. RAA with respect to a pp reference at √s = 2.76 TeV and RCP in central with respect to peripheral collisions.

### Primary author

Xiaoming Zhang (Laboratoire de Physique Corpusculaire, Clermont-Ferrand)

 Slides