Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2008-06-06
Physics
Nuclear Physics
Nuclear Experiment
6 pages, 7 figures, proceedings for the 24th Winter Workshop on Nuclear Dynamics (2008)
Scientific paper
Quarkonia (J/psi, psi', chi_C, Upsilon) production provides a sensitive probe of gluon distributions and their modification in nuclei; and is a leading probe of the hot-dense (deconfined) matter created in high-energy collisions of heavy ions. We will discuss the physics of quarkonia production in the context of recent p+p measurements at PHENIX. We next discuss Cold-Nuclear Matter (CNM) effects as seen in our measurements in $d+Au$ collisions - both for intrinsic physics such as gluon saturation and final-state dissociation, and as a baseline for studies in nucleus-nucleus collisions. Then we review the latest nucleus-nucleus results in the light of the expected CNM effects, and discuss two leading scenarios for the observed suppression patterns. Finally we show the latest data from PHENIX, including new d+Au data from the 2007-2008 run; and then look into the future.
for the PHENIX Collaboration
Leitch Michael J.
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