Speaker
Dr
W A Horowitz
(University of Cape Town)
Description
Bulk matter phenomena in heavy ion collisions is characterized by an extremely small viscosity to entropy ratio best understood by strong coupling dynamics described by the AdS/CFT correspondence. We test a consistent description of QGP physics by applying this AdS/CFT paradigm to the energy loss of heavy quarks. Previously we found consistency with the non-photonic electron data at RHIC but a significant, systematic oversuppression compared to LHC D meson measurements; b quark energy loss is so far consistent within the large uncertainties of current LHC results. Previous predictions for light mesons are also suggestive of oversuppression in this AdS/CFT picture. We present an attempt to resolve the discrepancy between the AdS/CFT energy loss predictions and data by incorporating a more realistic matching between the AdS/CFT world and ours, and thus resolve the current contradiction between the low momentum and high momentum physics phenomena seen at RHIC and LHC.
Author
Dr
W A Horowitz
(University of Cape Town)
