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Heavy quarks and quarkonia from PHENIX

The PHENIX experiment at the Relativistic Heavy Ion Collider has studied production of open and closed heavy flavor using a broad set of observables in various collision systems, p+p, d+Au, Cu+Cu, Cu+Au, Au+Au, U+U, with some of the measurements repeated at different beam energies. Such a rich set of results is important to disentangle the effects of the cold and the hot nuclear matter. We present the recent results on J/Psi production in Cu+Au collisions and Upsilon measurement in Au+Au collisions at sqrt(S_NN) =200 GeV, where suppression of the yields compared to p+p collisions was observed, with a rapidity dependent asymmetry found for the former system. We also present the results of the open heavy flavor production in Au+Au collisions at sqrt(s_NN)=62 GeV, measured through the single electron channel, where we found an enhancement of the yield and a non-zero elliptic flow. Finally, we report the newly extracted b-bbar cross-section measured in d+Au collisions at sqrt(s_NN)=200 GeV.

QGP; Heavy flavor; quarkonia

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