Nuclear Physics & RIKEN Theory Seminar

"Quarkonia in Medium and in Heavy-Ion Collisions"

Presented by Ralf Friedrich Rapp, Texas A&M University

Friday, February 6, 2009, 2:00 pm — Small Seminar Room, Bldg. 510

The properties of quarkonia in equilibrium QCD matter are studied and put into context with observables in ultrarelativistic heavy-ion collisions at SPS, RHIC and LHC. In the first part of the talk we focus on applications of potential models utilizing input from heavy-quark free energies computed in lattice-QCD. Applications to Euclidean correlation functions (independently computed in lattice QCD) currently exhibit a degeneracy of scenarios with small and large J/psi dissociation temperatures, due to an interplay of in-medium binding energies and heavy-quark masses. We also elaborate on the impact of color screening on quarkonium dissociation mechanisms in the Quark-GLuon Plasma. In the second part of the talk we address the current status of the phenomenology at SPS and RHIC, in particular the competition between dissociation and regeneration mechanisms and which observables might be most promising for discriminating them (including the LHC).

Hosted by: Gregory Soyez

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