Kruger2018: Discovery Physics at the LHC

3-7 December 2018
Casa do Sol
Africa/Johannesburg timezone
Abstract submission has been extended until 24 September

Strongly Coupled $\Upsilon$(1S) Suppression in $\sqrt{s}_{NN}=2.76$ TeV Pb+Pb Collisions

4 Dec 2018, 15:40
20m
Casa do Sol

Casa do Sol

Sabie Rd (R536), Hazyview, Mpumalanga, South Africa, 1242
Oral

Speaker

Nadia Barnard (University of Cape Town)

Description

In a revolutionary paper, Matsui and Satz proposed using the suppression of quarkonia as a smoking gun signature of deconfinement in relativistic heavy ion collisions. The stunning success of using strong-coupling, AdS/CFT techniques to predict the viscosity to entropy density ratio extracted from RHIC and LHC heavy ion collision data using sophisticated 3+1D relativistic viscous hydrodynamics has prompted further investigation into the physics of a strongly-coupled plasma. We compute, for the first time, the suppression of bottomonia in a strongly coupled QGP, and compare the results to those from a weakly coupled QGP and to data. The complex binding energies which inform the thermal width and hence the $R_{AA}$ of $\Upsilon$(1S) are determined using imaginary time techniques. Further, we discuss the validity of this methodology which solves for strongly coupled binding energies using static $q\bar{q}$ potential models from AdS/CFT by comparing to independent results.

Primary author

Nadia Barnard (University of Cape Town)

Co-author

William Horowitz (University of Cape Town)

Presentation Materials

There are no materials yet.