A broad model-data comparison shows that PYTHIA, AMPT, HIJING, and SMASH all fail to reproduce PHENIX transverse energy and multiplicity at low beam energies and in peripheral collisions.
Medium modifications of jet shapes in Pb+Pb collisions at $\sqrt{s_{_{\rm NN}}}$ = 2.76 TeV within a multiphase transport model
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abstract
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. 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.
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Model Comparisons of Transverse Energy and Charged-Particle Multiplicity in A+A Collisions at Midrapidity from $\sqrt{s_{NN}}$ $=$ 7.7 to 200~GeV
A broad model-data comparison shows that PYTHIA, AMPT, HIJING, and SMASH all fail to reproduce PHENIX transverse energy and multiplicity at low beam energies and in peripheral collisions.