2022/02/23 by Jiaxing Zhao, Zhao, Jiaxing, Pengfei Zhuang +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Nuclear physics research studies #X-ray Spectroscopy and Fluorescence Analysis
paper · pdf · doi:10.48550/arxiv.2202.11335
openalex publication_date 2022/02/23 · openalex created_date 2022/05/05 · openalex updated_date 2026/07/28
Integrated and differential J/ψ RAA are systematically studied in Au-Au collisions at RHIC-BES energies in a transport approach, including cold and hot nuclear effects respectively in the initial condition and the collision terms. With decreasing energy, while the temperature, life time and size of the QGP fireball decrease, the nuclear absorption of the initially produced charmonia is more and more strong, and the nuclear shadowing effect on charmonium regeneration goes to anti-shadowing first and then to shadowing again. As a competition between the cold and hot nuclear effects, the QGP phase is still important for charmonium production at √sNN=200, 62.4, 54.4 and 39 GeV but becomes negligible at √sNN=14.5 GeV.