Jet quenching and elliptic flow at RHIC and LHC within a pQCD-based partonic transport model

TL;DR

This paper uses a perturbative QCD-based transport model to simulate heavy ion collisions at RHIC and LHC, analyzing jet quenching and elliptic flow, and comparing results with experimental data.

Contribution

It introduces an extended BAMPS model including light quarks and inelastic processes, enabling direct comparison to experimental hadronic data at high energies.

Findings

Nuclear modification factor of neutral pions matches RHIC data.

First LHC results for charged hadron elliptic flow are consistent with ALICE measurements.

D-meson suppression studied through elastic interactions at LHC.

Abstract

Fully dynamic simulations of heavy ion collisions at RHIC and at LHC energies within the perturbative QCD-based partonic transport model BAMPS (Boltzmann Approach to Multi-Parton Scatterings) are presented, focusing on the simultaneous investigation of jet quenching and elliptic flow. The model features inelastic 2 <-> 3 processes based on the Gunion-Bertsch matrix element and has recently been extended to include light quark degrees of freedom, allowing for direct comparison to hadronic data on the nuclear modification factor via a fragmentation scheme for high-pT partons. The nuclear modification factor of neutral pions in central Au+Au collisions at RHIC energy is compared to experimental data. Furthermore first results on the nuclear modification factor and the integrated elliptic flow of charged hadrons in Pb+Pb collisions at LHC are presented and compared to recent ALICE data. These investigations are complemented by a study on the suppression of D-mesons at LHC based on elastic interactions with the medium.