Jets and elliptic flow correlations at low and high transverse momenta in ultrarelativistic A+A collisions

TL;DR

This paper analyzes elliptic flow correlations at various transverse momenta in Pb+Pb collisions at 5.02 TeV using the HYDJET++ model, revealing jet-related origins of flow correlations especially in peripheral collisions.

Contribution

It demonstrates the HYDJET++ model's ability to simultaneously describe low and high $p_T$ elliptic flow correlations and explains their centrality dependence and jet-related origins.

Findings

HYDJET++ reproduces the centrality dependence of flow correlations.

Jet correlations significantly influence flow in peripheral collisions.

Flow correlations at different $p_T$ are interconnected through jet effects.

Abstract

Data from the Large Hadron Collider on elliptic flow correlations at low and high $p_T$ from Pb+Pb collisions at $\sqrt{s_{NN}} = 5.02$~TeV are analyzed and interpreted in the framework of the HYDJET++ model. This model allows us to describe simultaneously the region of both low and high transverse momenta and, therefore, to reproduce the experimentally observed nontrivial centrality dependence of elliptic flow correlations. The origin of the correlations between low and high-$p_T$ flow components in peripheral lead-lead collisions is traced to correlations of particles in jets.