Orateur
Description
The main interest in relativistic heavy-ion collisions is the study of properties of the Quark Gluon Plasma (QGP). From a theoretical point of view, hybrid approaches, where different models are used to describe specific stages of the heavy-ion collision have had great success in describing a wide range of final state hadronic observables. Most of these models include an initial conditions generator that produces an energy density profile of the two colliding nuclei, followed by a hydrodynamic simulation. Glauber-based models and the Color Glass Condensate model (CGC), which is based in Yang-Mills theory, are among the most common approaches on generating such an initial energy density profile. In this work, we analyze the shape of initial conditions generated by the Glauber-inspired model TRENTo, and its dependence on the value of the nucleon-width parameter. The nucleon-width is one of the free parameters in the hybrid models, and is adjusted to best reproduce the experimental data. Hence it is important to understand and characterize the effects of this parameter on the initial conditions prior to the hydrodynamic evolution and connect that to its effects in final state observables. We calculate the eccentricity harmonics ε2, ε3, ε4 and ε5, and calculate some of the most commonly used quantities in surface roughness analysis to quantify the “spikeyness” of the initial profiles for several nucleon-width values.
