Bottomonium from lattice QCD as a probe of the Quark-Gluon Plasma

TL;DR

This study investigates how bottomonium states behave at various temperatures in the quark-gluon plasma using lattice QCD, providing insights consistent with experimental results from the LHC.

Contribution

It combines non-relativistic bottom quark dynamics with relativistic lattice QCD simulations to analyze bottomonium properties across a range of temperatures.

Findings

Bottomonium correlators show temperature-dependent modifications.

Spectral functions reveal changes in bottomonium states with temperature.

Results align with effective field theory predictions and LHC observations.

Abstract

We study the temperature dependence of bottomonium for temperatures in the range 0.4 Tc < T < 2.1 Tc, using non-relativistic dynamics for the bottom quark and full relativistic lattice QCD simulations for Nf=2 light flavors. We consider the behaviour of the correlators in Euclidean space, we analyze the associated spectral functions and we study the dependence on the momentum. Our results are amenable to a successful comparison with effective field theories. They help build a coherent picture of the behaviour of bottomonium in the plasma, consistent which the current LHC results.