Electrons and Heavy Quark at PHENIX Detector
  Measurement of heavy quark production is one of the tools used to investigate the matter produced in extremely hot and dense conditions in heavy ion collisions at RHIC. The PHENIX experiment has measured mid-rapidity transverse momentum spectra of electrons. After subtracting the photonic background contribution, the electron spectra are mainly due to semileptonic decays of hadrons containing heavy quarks and therefore provide a measurement of heavy quark production and its energy loss in hot and dense matter. This paper will present the technique used by the PHENIX experiment and recent results on heavy quark production in p+p, d+Au and Au+Au collisions at sqrt{s_NN}=200 GeV. 
Cesar Luiz Silva (for the PHENIX Collaboration)