The impact of fluctuating initial conditions on bottomonium suppression in 5.02 TeV heavy-ion collisions

Abstract

We compute bottomonium suppression and elliptic flow within the pNRQCD effective field theory using an open quantum systems approach. For the hydrodynamical background, we use 2+1D MUSIC second-order viscous hydrodynamics with IP-Glasma initial conditions and evolve bottom/antibottom quantum wave packets in real time in these backgrounds. We find that the impact of fluctuating initial conditions is small when compared to results obtained using smooth initial conditions. Including the effect of fluctuating initial conditions, we find that the Upsilon(1S) integrated elliptic flow is v_2[1S] = 0.005 +/- 0.002 +/- 0.001, with the first and second variations corresponding to statistical and systematic theoretical uncertainties, respectively.

arXiv comment7 pages, 3 figures; 2 page supplement with 3 figures

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• Regeneration of bottomonia in an open quantum systems approach
• Real Time Quarkonium Transport Coefficients in Open Quantum Systems from Euclidean QCD
• Liouvillian Dynamics of the Open Schwinger Model: String Breaking and Kinetic Dissipation in a Thermal Medium
• Generalized Gluon Distribution for Quarkonium Dynamics in Strongly Coupled $\mathcal{N}=4$ Yang-Mills Theory
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• Transverse momentum dependent feed-down fractions for bottomonium production