Probe the tilted Quark-Gluon Plasma with charmonium directed flow

Understand

Charmonium directed flows are studied based on transport model coupled with the realistic three dimensional expansions of the bulk medium.

• The non-central symmetric nucleus-nucleus collisions can generate the rotating quark-gluon plasma (QGP) with symmetry-breaking longitudinal distributions.
• In $\sqrt{s_{NN}}=200$ GeV Au-Au semi-central collisions, charmonium are primordially produced in the initial hard process, they are mainly dissociated by the initial tilted source with high temperatures and then move out of the bulk medium to keep the early information of the medium.
• Charmonia are less affected by the hydrodynamic expansions of QGP where its tilted shape is being diluted.