Constraining the viscous freeze-out distribution function with data obtained at the BNL Relativistic Heavy Ion Collider RHIC - Nuclear TheoryReport as inadecuate




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Abstract: We investigate the form of the viscous correction to the equilibriumdistribution function in the context of a Cooper-Frye freeze out prescriptionfor viscous hydrodynamic simulations of relativistic heavy ion collisions. Thestandard quadratic ansatz used by all groups for the case of shear viscosity isfound to be disfavored by experimental data for v4-v2^2 at the RelativisticHeavy Ion Collider, and is unlikely to be correct for the hadron resonance gaspresent at freeze out. Instead, data for v2pt along with v4-v2^2 favor amomentum dependence between linear and quadratic.



Author: Matthew Luzum, Jean-Yves Ollitrault

Source: https://arxiv.org/



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