Interplay of drag by hot matter and electromagnetic force on the directed flow of heavy quarks

Understand

Rapidity-odd directed flow in heavy ion collisions can originate from two very distinct sources in the collision dynamics i.

• an initial tilt of the fireball in the reaction plane that generates directed flow of the constituents independent of their charges, and ii.
• the Lorentz force due to the strong primordial electromagnetic field that drives the flow in opposite directions for constituents carrying unlike sign charges.
• We study the directed flow of open charm mesons $D^0$ and $\overline{D^0}$ in the presence of both these sources of directed flow.