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In hydrodynamical modeling of heavy-ion collisions the initial state spatial anisotropies translate into momentum anisotropies of the final state particle distr ibutions. Thus, understanding the origin of the initial anisotropies and quantifying their un certainties is important for the extraction of specific QCD matter properties, such as viscosity, from th e experimental data. In this work we study the wounded nucleon approach in the Monte Carlo Glauber model framework, focusing especially on the uncertainties which arise from the modeling of the nucleon-nucleon interactions between the colliding nucleon pairs and nucleon-nucleon correlations inside the colliding nuclei. We compare the black disk model and a probabilistic profile fu nction approach for the inelastic nucleon-nucleon interactions, and study the effects of ini tial state correlations using state-of-theart modeling of these.

Initial state anisotropies in ultrarelativistic heavy-ion collisions from the Monte Carlo Glauber model