Bottomonium observables in an open quantum system using the quantum trajectories method

TL;DR

This paper models bottomonium behavior in quark-gluon plasma using a quantum trajectories approach to solve the Lindblad equation, achieving good agreement with LHC experimental data without free parameters.

Contribution

It introduces a novel application of the quantum trajectories method to bottomonium in a quark-gluon plasma, incorporating realistic hydrodynamics and lattice QCD transport coefficients.

Findings

Computed bottomonium nuclear modification factor and elliptic flow.

Results agree well with LHC 5.02 TeV PbPb collision data.

No free parameters used, relying on independently evaluated transport coefficients.

Abstract

We solve the Lindblad equation describing the Brownian motion of a Coulombic heavy quark-antiquark pair in a strongly coupled quark gluon plasma using the Monte Carlo wave function method. The Lindblad equation has been derived in the framework of pNRQCD and fully accounts for the quantum and non-Abelian nature of the system. The hydrodynamics of the plasma is realistically implemented through a 3+1D dissipative hydrodynamics code. We compute the bottomonium nuclear modification factor and elliptic flow and compare with the most recent LHC data. The computation does not rely on any free parameter, as it depends on two transport coefficients that have been evaluated independently in lattice QCD. Our final results, which include late-time feed down of excited states, agree well with the available data from LHC 5.02 TeV PbPb collisions.