Deformed Flux Tubes Produce Azimuthal Anisotropy in Heavy Ion Collisions

TL;DR

This paper models azimuthal anisotropy in heavy ion collisions by introducing flux tube deformation and momentum anisotropy parameters, successfully matching LHC data.

Contribution

It introduces two phenomenological parameters, elta and mbda_2, linking flux tube deformation to particle momentum anisotropy in a maximum entropy framework.

Findings

Computed v2 as a function of centrality, transverse momentum, and rapidity.

Achieved qualitative agreement with LHC experimental data.

Linked flux tube deformation to observed azimuthal anisotropy.

Abstract

We investigate the azimuthal anisotropy $v_2$ of particle production in nucleus-nucleus collisions in the maximum entropy approach. This necessitates two new phenomenological input parameters $\delta$ and $\lambda_2$ compared with integrated multiplicity distributions. The parameter $\delta$ describes the deformation of a flux tube and can be theoretically calculated in a bag model with a bag constant which depends on the density of surrounding flux tubes. The parameter $\lambda_2$ defines the anisotropy of the particle distribution in momentum space and can be connected to $\delta$ via the uncertainty relation. In this framework we compute the anisotropy $v_2$ as a function of centrality, transverse momentum and rapidity in qualitative agreement with LHC data.