Predictions for bottomonia suppression in 5.023 TeV Pb-Pb collisions

TL;DR

This paper predicts the suppression patterns of various bottomonium states in 5.023 TeV Pb-Pb collisions at the LHC using advanced hydrodynamic models and explores how different assumptions affect these predictions.

Contribution

It provides the first detailed predictions for bottomonium suppression at 5.023 TeV, incorporating non-equilibrium effects and model parameter variations.

Findings

Predicted R_AA as a function of centrality, rapidity, and p_T for Upsilon states.

Quantified the impact of shear viscosity and initial anisotropy on suppression.

Included feed down effects in the suppression predictions.

Abstract

We compute the suppression of the bottomonia states Upsilon(1S), Upsilon(2S), Upsilon(3S), chi_b(1P), chi_b(2P), and chi_b(3P) states in Large Hadron Collider (LHC) sqrt(s_NN)) = 5.023 TeV Pb-Pb collisions. For the background evolution we use 3+1d anisotropic hydrodynamics with conditions extrapolated from sqrt(s_NN) = 2.76 TeV and we self-consistently compute bottomonia decay rates including non-equilibrium corrections to the interaction potential. For our final results, we make predictions for R_AA as function of centrality, rapidity, and p_T for the Upsilon(1S) and Upsilon(2S) states, including feed down effects. In order to assess the dependence on some of the model assumptions, we vary the shear viscosity-to-entropy density ratio, 4 pi eta/s = (1, 2, 3), and the initial momentum-space anisotropy parameter, xi_0 = (0, 10, 50), while holding the total light hadron multiplicity fixed.