Coulomb Dissociation Measurements in Isobaric Collisions at $\sqrt{s_{NN}} = 200$ GeV with the STAR Experiment

This work presents a pioneering study of Coulomb Dissociation (CD) in Isobar Ultraperipheral Collisions (UPCs) at the STAR experiment. CD is a purely electromagnetic process that occurs when the Coulomb fields of two colliding ions interact, resulting in the dissociation of neutrons. By utilizing the Zero-degree calorimeter (ZDC) to measure neutron emission and select forward-backward coincidences, we can study CD in detail.

Our measurement provides new insights into the dynamics of heavy-ion collisions and contributes to our understanding of nuclear structure and the interplay between electromagnetic and strong forces. The unique properties of Isobar UPCs, including their clean Coulomb interaction and the slightly different proton numbers of the colliding ions, offer a valuable opportunity to investigate the role of nuclear structure in CD processes.

This work represents a significant advancement in the field of nuclear physics and has the potential to shed light on fundamental aspects of strong interactions and the structure of nuclei.

PA : Huda Nasrulloh
Type of Contribution : Talk
Title : Coulomb Dissociation Measurements in Isobaric Collisions at $\sqrt{s_{NN}} = 200$ GeV with the STAR Experiment

Relevant Presentation in the PWG Meeting :
https://drupal.star.bnl.gov/STAR/event/2024/04/22/LFSUPC-PWG-meeting/Investigating-Mutual-Coulomb-Dissociation-Isobar-UPC-200-GeV