Comparison of model predictions for elliptic flow with experiment for Pb+Pb collisions at sqrt{sNN}=2.76 TeV

TL;DR

This paper uses a simple kinematic model combining superposition of p+p collisions, relativistic geometry, and rescattering to predict elliptic flow in Pb+Pb collisions at 2.76 TeV, comparing with experimental data.

Contribution

It introduces a straightforward model that successfully predicts elliptic flow, indicating a short-lived parton phase in high-energy heavy-ion collisions.

Findings

Model predictions align reasonably with experimental data.

Short hadronization time suggests a brief parton phase.

Supports the idea of a short-lived quark-gluon plasma.

Abstract

A simple kinematic model based on the superposition of p+p collisions, relativistic geometry and hadronic rescattering is used to predict the elliptic flow observable in sqrt{sNN} = 2.76 TeV Pb+Pb collisions. A short proper time for hadronization is assumed. The predictions are compared with recent experimental measurements of elliptic flow which have been made for this colliding system and energy. It is found that the model predictions do a reasonable job in describing the experimental results, suggesting that the parton phase in these collisions may be short-lived.