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

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

2011-09-21

arxiv.org/abs/1109.4607v1

Physics

Nuclear Physics

Nuclear Experiment

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

Scientific paper

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 %$D^0\rightarrow K^-\pi^+$, $D^+\rightarrow K^-\pi^+ \pi^+$, and $D^{*+} \rightarrow D^0 (K^-\pi^+) + \pi^+$ 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.

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