Within a multiphase transport model, medium modifications of differential jet shapes are investigated in $\text{Pb}+\text{Pb}$ collisions at $\sqrt{s_{{}_{\mathrm{NN}}}}$ = 2.76 TeV. The differential jet shapes are significantly modified by the strong interactions between jets and a partonic medium in $\text{Pb}+\text{Pb}$ collisions relative to that in $p+p$ collisions. The modifications are slightly weakened by the hadronization of coalescence, but strengthened by resonance decays in hadronic rescatterings. Subleading jets display larger medium modifications than leading jets, especially in central $\text{Pb}+\text{Pb}$ collisions with large dijet asymmetries. These behaviors of medium modifications of differential jet shapes reflect a dynamical evolution of redistribution of jet energy inside a quenched jet cone in high-energy heavy-ion collisions.

• Received 28 September 2013

DOI:https://doi.org/10.1103/PhysRevC.89.024902