Event-by-event viscous hydrodynamics for Cu-Au collisions at 200GeV

TL;DR

This paper applies event-by-event viscous hydrodynamics to Cu-Au collisions at 200GeV, providing predictions for particle distributions, flow coefficients, and analyzing the effects of initial profile fluctuations on directed flow.

Contribution

It introduces a detailed event-by-event viscous hydrodynamics model for asymmetric Cu-Au collisions and explores the impact of initial fluctuations on flow observables.

Findings

Nonzero directed flow at central rapidity in asymmetric collisions.

Fluctuations increase directed flow when measured in the event plane.

Predictions for particle distributions and femtoscopy radii.

Abstract

Event-by-event hydrodynamics is applied to Cu-Au collisions at 200GeV. Predictions for charged particle distributions in pseudorapidity, transverse momentum spectra, femtoscopy radii are given. The triangular and elliptic flow coefficients are calculated. The directed flow at central rapidity in the reaction plane in asymmetric collisions is nonzero, fluctuations of the initial profile lead to a further increase of the directed flow when measured in the event plane.