# Heavy flavor production in PHENIX

Abstract : The PHENIX experiment at RHIC measured single electron spectra in p + p, d + Au and Au + Au collisions at $\sqrt{s_{NN}} = 200$ GeV, and in Au + Au collisions at $\sqrt{s_{NN}} = 62.4$ GeV. In these spectra, electrons from semi-leptonic decays of charmed particles are the dominant contribution after subtraction of all 'photonic' sources (photon conversions, Dalitz decays, decays of light vector mesons). The p + p open charm production cross-section is found to be in good agreement with pQCD NLO calculations. The shape of the distributions obtained for p + p interactions is compared with those observed for nucleus-nucleus collisions. From p + p to d + Au and Au + Au interactions, open charm production is found to scale with the number of binary collisions $N_{\rm coll}$ . Au + Au data at $\sqrt{s_{NN}} = 62.4$ GeV is compatible with the ISR p + p results scaled by $N_{\rm coll}$ . The elliptic flow parameter v2 of heavy flavor electrons has also been measured, and is found to be non-zero in the intermediate pT range.
Document type :
Conference papers

http://hal.in2p3.fr/in2p3-00024560
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Submitted on : Friday, September 9, 2005 - 12:09:53 PM
Last modification on : Tuesday, April 20, 2021 - 12:00:09 PM

### Citation

S.S. Adler, S. Afanasiev, C. Aidala, N.N. Ajitanand, Y. Akiba, et al.. Heavy flavor production in PHENIX. International Conference on Hard and Electromagnetic Probes of High Energy Nuclear Collisions - Hard Probes 2004, Nov 2004, Ericeira, Portugal. pp.201-208, ⟨10.1140/epjc/s2005-02307-9⟩. ⟨in2p3-00024560⟩

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