Hadronic observables from a hadronic rescattering model in $Pb+Pb$ collisions at $\sqrt{s_{NN}}=2.76$ TeV

TL;DR

This study uses a simplified hadronic rescattering model with a novel squeeze procedure and varying hadronization times to qualitatively and quantitatively describe hadronic observables in lead-lead collisions at 2.76 TeV.

Contribution

The paper introduces a modified rescattering model with a squeeze procedure and systematic hadronization time variation for better data representation.

Findings

Model describes data reasonably well

Squeeze procedure improves pseudorapidity distribution

Results are robust against small parameter changes

Abstract

We employ a simple kinematic model based on the superposition of $p+p$ collisions, relativistic kinematics, and final-state hadronic rescattering to calculate a number of hadronic observables in $\sqrt{s_{NN}}=2.76$ TeV $Pb+Pb$ collisions. The current model is similar to those used in previous studies, but includes an additional procedure ("squeeze procedure") which modifies the model pseudorapidity distribution to better represent the experimental data. In addition, we vary the model hadronization time ($\tau$ = 0.1, 0.2, 0.3 fm/c) to gain a better understanding of our systematic uncertainty. We find that the simple model describes the overall data reasonably well qualitatively, and in some cases quantitatively. Furthermore, the model is found to be robust in the sense that using the squeeze procedure and small variations of the hadronization proper time do not significantly affect our results.