Effects of Conservation Laws on Particle Correlations in Relativistic Nuclear Collisions

The grand canonical statistical ensemble is usually assumed when simulating particle emission from the Quark-Gluon Plasma fluid created in relativistic heavy-ion collisions. These simulations conserve energy and momentum on an event-average level. This talk investigates how event-by-event local energy and momentum conservation [1] introduces non-trivial multi-particle correlations in Au+Au collisions at the RHIC. We will focus on the effects of local momentum conservation on the final-state particle dipolar flow and its correlations with the other anisotropic flow coefficients. We will also study the effects of micro-canonical sampling on particle spectra and anisotropic flow in small proton-nucleus collisions at RHIC and LHC.

[1] D. Oliinychenko and V. Koch, “Microcanonical Particlization with Local Conservation Laws,” Phys. Rev. Lett. 123, no.18, 182302 (2019)