Physics and Astronomy Colloquium - "Bottomonium suppression in the quark-gluon plasma"Professor Michael Strickland, Kent State University, December 5, 2019
This event is in the past.
Abstract: The suppression of bottomonia in ultrarelativistic heavy-ion collisions is a smoking gun for the production of a long-lived strongly interacting final state. Moreover, the experimentally observed suppression is consistent with the production of a hot hydrodynamically expanding quark-gluon plasma (QGP) with initial temperatures on the order of 600-700 MeV at LHC collision energies. Theoretical models which incorporate plasma screening and in-medium bound-state breakup based on high-temperature quantum chromodynamics are in good agreement with the centrality, transverse-momentum, and rapidity dependence of the experimentally observed suppression. Importantly, these models are self-consistently coupled to the soft dynamics of the QGP using 3+1d relativistic hydrodynamics which provides tight constraints on the evolution of the QGP temperature, etc. The resulting model comparisons with LHC experimental data indicate primordial suppression of all bottomonium states, with states having the lowest binding energies suffering the most suppression. I will review recent theoretical and experimental advances in the study of in-medium heavy quarkonia suppression and discuss these advances in the larger context of the hunt for the QGP.