Calendar of Physics Talks Vienna

Thermal Upsilon(1s) and chi_b1 Suppression in sqrt(s_NN)=2.76 TeV Pb-Pb Collisions
Speaker:Michael Strickland (Gettysburg Coll. & Frankfurt U., FIAS)
Abstract:In this talk I will discuss my recent work on thermal heavy quarkonium suppression. The thermal suppression of heavy quark bound states represents an ideal observable for determining if one has produced a quark gluon plasma in ultrarelativistic heavy-ion collisions. In recent years, however, a paradigm shift has taken place in the theory of quarkonium suppression due to new first principles calculations of the thermal widths of these states. These thermal widths are large, eg O(30-100 MeV) for the Upsilon, and cause in-medium suppression of the states at temperatures below their traditional disassociation temperatures. In order to apply the newly developed understanding to phenomenology, however, one must make detailed space-time models of the plasma including the effects of finite shear viscosity. These effects include not only the modification of the time evolution of the temperature of the system, flow, etc., but also the evolution of potentially large local momentum-space anisotropies which affect the binding energy of the states.
Date: Wed, 10.08.2011
Time: 11:15
Duration: 60 min
Location:Institute for Theoretical Physics, TU Wien, SEM 136, 10th floor, Wiedner Hauptstr. 8-10, 1040 Wien
Contact:Anton Rebhan, TU Wien