# Electron-D$^0$ correlations in p+p and Au+Au collisions at 200 GeV with the STAR experiment at RHIC

Abstract : The energy loss of heavy quarks in the hot and dense matter created at RHIC can be used to probe the properties of the medium. Both charm and beauty quarks contribute to non-photonic electrons through their semileptonic decays. Thus it is essential to determine experimentally the relative contribution of those flavors for understanding the suppression of beauty at high pT in central Au+Au collisions. The azimuthal angular correlations of non-photonic electrons with the reconstructed D0 allow to disentangle that contribution. Furthermore, presence of a non-photonic electron significantly reduces the background in the D0 invariant mass region. In this paper the STAR measurement of a non-photonic electron and D0 ! K azimuthal correlations in p+p collisions at 200 GeV will be presented along with perspectives on such measurement for the Au+Au system.
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s4p0759.pdf
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### Citation

W. Borowski. Electron-D$^0$ correlations in p+p and Au+Au collisions at 200 GeV with the STAR experiment at RHIC. International Meeting ''Excited QCD'', Feb 2011, Les Houches, France. pp.759-765, ⟨10.5506/APhysPolBSupp.4.759⟩. ⟨in2p3-00794731⟩

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