Heavy-flavor production in pp and Pb-Pb collisions at LHC with ALICE

Abstract

We report recent results from the ALICE experiment the Large Hadron Collider on open charmed hadron production in pp collisions at $\sqrt{s}=2.76$ and 7 TeV, and Pb-Pb collisions at $\sqrt{{\mathrm{s}}_{{}_{\mathrm{NN}}}}=2.76$ TeV. Open charmed hadrons are kinematically fully reconstructed in the hadronic decay channels \DtoKpi, \DtoKpipi, and \DstartoDpi %$D^0\to K^{-}{\pi }^{+}$, $D^{+}\to K^{-}{\pi }^{+}{\pi }^{+}$, and $D^{\ast +}\to D^0(K^{-}{\pi }^{+})+{\pi }^{+}$ and identified through their invariant mass. Combinatorial background is minimized by selecting a displaced vertex topology. Inclusive charm and beauty production is measured by detecting electrons (muons) from semi-leptonic decays of open charmed and beauty hadrons in the central (forward) region. Comparison to results from state-of-the-art QCD calculations is given. First results on nuclear modifications factors in Pb--Pb collisions from hadronic and semi-leptonic decays are presented.

arXiv commentproceedings of the Hadron 2011 Conference, 13-17 June 2011, Munich, Germany, 6 pages, 3 figs

References in corpus (2)

• Heavy Quark Production in p+p and Energy Loss and Flow of Heavy Quarks in Au+Au Collisions at sqrt(s_NN)=200 GeV
• Reference heavy flavour cross sections in pp collisions at sqrt(s) = 2.76 TeV, using a pQCD-driven sqrt(s)-scaling of ALICE measurements at sqrt(s) = 7 TeV