Open heavy flavour and J/psi production in proton-proton collisions measured with the ALICE experiment at LHC

Abstract

Open heavy flavour and J/psi production are powerful tools to test pQCD calculations in proton-proton collisions in the new LHC energy regime. In addition, they provide the necessary reference for the ALICE heavy-ion program. The ALICE experiment at the LHC collected proton-proton collisions at sqrt{s} = 7 and 2.76 TeV in 2010 and 2011. We report here the latest results of open heavy flavour and J/psi production at both mid- and forward-rapidity via their various hadronic and leptonic decay channels. These include, among other topics, the first LHC result on J/psi polarization, multiplicity dependence of the J/psi production, D-meson measurement down to low transverse momentum and J/psi production from B-hadron decays. Comparisons with different theoretical models will be discussed as well.

arXiv comment4 pages, 4 figures, Proceedings of the Hard Probes 2012 conference, to be published on Nuclear Physics A

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• The ALICE TPC, a large 3-dimensional tracking device with fast readout for ultra-high multiplicity events
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• Measurement of electrons from semileptonic heavy-flavor hadron decays in pp collisions at $\sqrt{s}=2.76$ TeV

Cited by in corpus (1)

• Heavy-flavour production in ALICE at the LHC