Particle production azimuthal asymmetries in a clustering of color sources model

TL;DR

This paper investigates azimuthal asymmetries in particle production using a clustering of color sources model, showing good agreement with RHIC data and making predictions for LHC energies, including proton-proton collisions.

Contribution

It introduces a clustering of color sources framework to describe azimuthal asymmetries, extending understanding of collective effects in high-energy collisions.

Findings

Good agreement with RHIC data for v2 and nuclear modification factor at low pT

Predictions for azimuthal asymmetries at LHC energies for Pb-Pb collisions

Sizable v2 predicted for proton-proton collisions at LHC energies

Abstract

The collective interactions of many partons in the first stage of the collisions is the usual accepted explanation of the sizable elliptical flow. The clustering of color sources provides a framework of partonic interactions. In this scheme, we show a reasonable agreement with RHIC data for pT<1.5 GeV/c in both the dependence of v2 transverse momentum and in the shape of the nuclear modified factor on the azimuthal angle for different centralities. We show the predictions at LHC energies for Pb-Pb. In the case of proton-proton collisions a sizable v2 is obtained at this energy.