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.
Decomposition of jet fragmentation function in high-energy heavy-ion collisions
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abstract
Based on a multi-phase transport model, the measured jet fragmentation function ratio of Pb+Pb collisions to p+p collisions in CERN Large Hadron Collider experiments is decomposed into two parts, corresponding to the two contributions of jet hadronization from fragmentation and coalescence. The results suggest an existence of distinct competitions between two jet hadronization mechanisms for different $\xi$=ln(1/$z$) ranges in different centrality bins. The jet fragmentation functions for different types of hadrons (mesons and baryons) are proposed as a good probe to study the competition between fragmentation and coalescence for the jet hardonization 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.