JΦ→ ee and J/Φ→ μμ measurements in AuAu and pp collisions at SNN=200GeV

Abstract First results are presented from J Φ→ ee and J /Φ→ μμ measurements by the PHENIX experiments at RHIC. These results are from a preliminary analysis of dielectrons from AuAu and pp data and dimuons from pp data measured in the RHIC run 2. A total cross section for J /Φ production in √s = 200 GeV pp collisions of 3.8 ± 0.6 (stat) ±1.3 (sys) μb is found. The J /Φ→ ee yield is presented versus number of binary collisions.