Elliptic flow at RHIC and LHC in the string percolation approach

TL;DR

This paper uses the string percolation model to describe elliptic flow at RHIC and LHC, successfully matching experimental data and predicting flow increases at LHC energies.

Contribution

It demonstrates that the string percolation approach accurately describes elliptic flow and predicts its behavior at higher energies, extending previous models.

Findings

Good agreement with RHIC data on v2

Predicted 25% increase in v2 at LHC

Compatible with small eta/s ratio

Abstract

The percolation of strings gives a good description of the RHIC experimental data on the elliptic flow, v2 and predicted a rise on the integrated v2 of the order of 25% at LHC such as it has been experimentally obtained. We show that the dependence of v2 on pT for RHIC and LHC energies is approximately the same as it has been observed, for all the centralities. We show the results for different particles and the dependence of v2 on the centralities and rapidity. Our results are compatible with an small value of the ratio eta/s in the whole energy range such as it was expected in the percolation framework.