Triangular flow in heavy ion collisions in a multiphase transport model

TL;DR

This paper develops a multiphase transport model with new parameters that successfully describes certain collision observables at RHIC and predicts triangular flow effects from initial geometry fluctuations.

Contribution

It introduces a new parameter set for the AMPT model that reproduces key experimental measurements and explores the impact of triangular flow on azimuthal correlations.

Findings

Model accurately describes charged particle multiplicity and elliptic flow.

Predicts significant triangular flow contributions from initial geometry fluctuations.

Shows the effect of triangular flow on di-hadron azimuthal correlations.

Abstract

We have obtained a new set of parameters in a multiphase transport (AMPT) model that are able to describe both the charged particle multiplicity density and elliptic flow measured in Au+Au collisions at center of mass energy $\sqrt{s_{NN}}=200$ GeV at the Relativistic Heavy Ion Collider (RHIC), although they still give somewhat softer transverse momentum spectra. We then use the model to predict the triangular flow due to fluctuations in the initial collision geometry and study its effect relative to those from other harmonic components of anisotropic flows on the di-hadron azimuthal correlations in both central and mid-central collisions.