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

We report recent results from the ALICE experiment the Large Hadron Collider on open charmed hadron production in pp collisions at ? s “ 2.76 and 7 TeV, and Pb–Pb collisions at sNN “ 2.76 TeV. Open charmed hadrons are kinematically fully reconstructed in the hadronic decay channels D0 Ñ K ́π`, D` Ñ K ́π`π`, and D ̊`p2010q Ñ D0π`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.