Probing Neutron Skin through Event-by-Event Pion Asymmetry in Heavy-ion collisions

Xu-Hua Tian, Long-Gang Pang

In this work, we propose a novel approach for probing the neutron skin thickness of gold (Au) by analyzing the event-by-event distribution of ${\pi }^{-}$ and ${\pi }^{+}$ yield differences.…