Work

Energy dependence of heavy-ion initial condition in isobar collisions

Year: 2024

Type: article

Abstract: Collisions of isobar nuclei, those with the same mass number but different structure parameters, provide a new way to probe the initial condition of the heavy ion collisions. Using transport model simulation of 96 Ru+ 96 Ru and 96 Zr+ 96 Zr collisions at two energies s NN = 0.2 TeV and 5.02 TeV, where 96 Ru and 96 Zr nuclei have significantly different deformations and radial profiles, we identify sources of eccentricities contributing independently to the final state harmonic flow v n . The efficacy for flow generation differs among these sources, and explains the modest energy dependence of the isobar ratios of v n . Additionally, a significant component of v n is found to be uncorrelated with the eccentricity, but is instead generated dynamically during system evoluation. Experimental measurement of these ratios at the LHC energy and comparison with RHIC energy can provide insight into the collision-energy dependence of the initial condition.

Source: Physics Letters B

DOI: 10.1016/j.physletb.2024.139034

Authors: Somadutta Bhatta, Chunjian Zhang, Jiangyong Jia

Institutions: Stony Brook University, Brookhaven National Laboratory

Language: English

Topic: High-Energy Particle Collisions Research

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond

Funders: U.S. Department of Energy, Office of Science

Awards: INITIAL CONDITION AND FINAL STATE COLLECTIVITY IN HEAVY-ION COLLISIONS, G2048939477