Medium modifications of jet shapes in Pb+Pb collisions at $\sqrt{s_{_{\rm NN}}}$ = 2.76 TeV within a multiphase transport model

Understand

Within a multiphase transport model, medium modifications of differential jet shapes are investigated in Pb+Pb collisions at $\sqrt{s_{_{\rm NN}}}$ = 2.76 TeV.

• The differential jet shapes are significantly modified by the strong interactions between jets and a partonic medium in Pb+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 Pb+Pb collisions with large dijet asymmetries.