Momentum transport away from a jet in an expanding nuclear medium

Understand

We study the transport dynamics of momenta deposited from jets in ultrarelativistic heavy-ion collisions.

• Assuming that the high-energy partons traverse expanding quark-gluon fluids and are subject to lose their energy and momentum, we simulate dijet asymmetric events by solving relativistic hydrodynamic equations numerically without linearization in the fully (3+1)-dimensional coordinate.
• Mach cones are formed and strongly broadened by radial flow of the background medium.
• As a result, the yield of low-$p_{T}$ particles increases at large angles from the jet axis and compensates the dijet momentum imbalance inside the jet-cone.