Alternative ansatz to wounded nucleon and binary collision scaling in   high-energy nuclear collisions
  We introduce TRENTO, a new parametric initial condition model for high-energy nuclear collisions based on eikonal entropy deposition via a "reduced thickness" function. The model simultaneously describes experimental proton-proton, proton-nucleus, and nucleus-nucleus multiplicity distributions, and generates nucleus-nucleus eccentricity harmonics consistent with experimental flow constraints. In addition, the model is compatible with ultra-central uranium-uranium data unlike existing models that include binary collision terms. 
J. Scott Moreland, Jonah E. Bernhard, Steffen A. Bass
nucl-th hep-ph nucl-ex