Speaker
Prof.
Sheng-Qin Feng
(China Three Gorges University)
Description
Considering the magnetic field response of the QGP medium, we perform a systematical study of the chiral
magnetic effect (CME), and make a comparison with the experimental results for the background-subtracted
correlator H at the energies of the RHIC Beam Energy Scan (BES) and the LHC energy. The CME signals
from our computations show a centrality trend and beam energy dependence that are qualitatively consistentwith the experimental measurements of the charge dependent correlations. The time evolution of the chiral
electromagnetic current at the RHIC and LHC energies is systematically studied.
Recent STAR measurements suggest a difference in the global spin polarization between hyperons and
anti-hyperons, especially at relatively low collision beam energy. One possible cause of this difference is
the potential presence of in-medium magnetic field. In this study, we investigate the phenomenological
viability of this interpretation. Using the AMPT model framework, we quantify the influence of different
magnetic field evolution scenarios on the size of the polarization difference in a wide span of collision
beam energies.
Primary author
Prof.
Sheng-Qin Feng
(China Three Gorges University)
