An explanation of the elliptic flow difference between proton and anti-proton from the UrQMD model with hadron potentials

摘要: The time evolution of both proton and anti-proton v 2 flows from Au+Au collisions at $$\sqrt {{S_{NN}}} = 7.7$$ GeV are examined by using pure cascade mean-field potential versions the UrQMD model. Due to a stronger repulsion early stage introduced repulsive potentials hence much less annihilation probabilities, anti-protons frozen out earlier with smaller values. Therefore, experimental data as well flow difference between can be reasonably described version UrQMD.