J/psi Elliptic Flow, High pT Suppression and Upsilon Measurements in A+A Collisions by the PHENIX Experiment

Understand

Three measurements that broaden the scope of the experimental investigation of quarkonia modifications in heavy ion collisions are presented.

• Although the current statistical precision on the first two measurements does not allow one to draw significant conclusions, J/$\psi$ elliptic flow and high pT suppression results are important proofs of principle measurements, and make the case for higher luminosities at RHIC.
• Finally, the first measurement of an upper limit on the nuclear modification R_AA of dielectrons in the $\Upsilon$ mass region in Au+Au collisions is presented.
• The results show a significant suppression with an upper limit of 0.64 at 90% CL.