Elliptic flow from pQCD + saturation + hydro model

TL;DR

This paper extends previous predictions of hadron multiplicities and spectra at the LHC to non-central collisions, analyzing elliptic flow ($v_2$) for pions and protons using a combined pQCD, saturation, and hydrodynamic model.

Contribution

It introduces a method to predict the $p_T$ dependence of elliptic flow in non-central collisions at the LHC, incorporating initial state models and hydrodynamics.

Findings

Predicted $v_2$ for pions at the LHC across centralities.

Analyzed the change in $v_2$ $p_T$ dependence for protons from RHIC to LHC.

Extended previous models to include non-central collision geometries.

Abstract

We have previously predicted multiplicities and transverse momentum spectra of hadrons for the most central LHC Pb+Pb collisions at $\sqrt{s_{NN}}=5.5$ TeV using initial state for hydrodynamic evolution from pQCD + final state saturation model. By considering binary collision and wounded nucleon profiles we extend these studies to non-central collisions, and predict the $p_{T}$ dependence of minimum bias $v_{2}$ for pions at the LHC. For protons we also show how the $p_{T}$ dependence of $v_2$ changes from RHIC to the LHC.