Exploring Initial and Final Baryon Distributions in Heavy-Ion Collisions at Beam Energy Scan

by Dr Lipei Du (McGill University)

Thursday 1 Jun 2023, 15:30 → 16:30 Asia/Shanghai

B105 (CHEP)

Understanding the baryon charge evolution is crucial for probing the Quantum Chromodynamics (QCD) phase diagram through heavy-ion collisions at beam energy scan energies. This talk presents recent advancements in constraining the initial and final baryon distributions through rapidity-dependent measurements at various beam energies. Using a (3+1)-dimensional hybrid framework, we demonstrate that the directed flow of baryons, along with that of mesons, strongly constrains the initial baryon stopping and probes the equation of state of dense nuclear matter at finite chemical potentials. Additionally, we investigate the thermodynamic properties along the beam direction near the chemical freeze-out within the hybrid framework. We also propose a novel rapidity-dependent thermal model that incorporates the dynamic features of the multistage framework, enabling us to extract rapidity-dependent thermodynamic parameters at the freeze-out for low-beam energy collisions.

Bio:
Lipei Du obtained his Ph.D. from Ohio State University in 2021. He then joined McGill University as a postdoctoral researcher. His research primarily focuses on hybrid hydrodynamic modeling of heavy-ion collisions in the Beam Energy Scan program.