Exploring Rapidity-Even Dipolar Flow in Isobaric Collisions at RHIC

TL;DR

This study uses the AMPT model to analyze how rapidity-even dipolar flow and related parameters respond to nuclear structure differences in isobaric collisions at RHIC, providing insights into initial conditions of nuclear models.

Contribution

It demonstrates the sensitivity of dipolar flow and GMC parameters to nuclear structure differences in $^{96}$Ru and $^{96}$Zr collisions, aiding refinement of initial condition models.

Findings

$ m v^{even}_{1}$ and $ ext{GMC } K$ show sensitivity to nuclear structure differences.

Analysis suggests these measurements can help refine nuclear structure models.

Subtle differences in flow parameters can inform initial condition assumptions.

Abstract

Employing the AMPT transport model, we investigate the response of the rapidity-even dipolar flow ($\mathrm{v^{even}_{1}}$) and its associated Global Momentum Conservation (GMC) parameter $\mathrm{K}$ to structural disparities within $^{96}$Ru and $^{96}$Zr nuclei. We analyze $\rm Ru+Ru$ and $\rm Zr+Zr$ collisions at a center-of-mass energy of $\sqrt{\textit{s}_{NN}}$ = 200 GeV. Our analysis demonstrates that the eccentricity $\varepsilon_1$, $\mathrm{v^{even}_{1}}$ and $\mathrm{K}$ exhibit subtle yet discernible sensitivity to the input nuclear structure distinctions between $^{96}$Ru and $^{96}$Zr isobars. This observation suggests that measuring $v^{\rm even}_{1}$ and the GMC parameter in these isobaric collisions could serve as a means to fine-tune the comprehension of their nuclear structure disparities and offer insights to enhance the initial condition assumptions of theoretical models.