2009/04/30 by Jean-Yves Ollitrault, Arthur M. Poskanzer, A. M. Poskanzer +2 · 3 citations
Engineering · Physics and Astronomy · #High-Energy Particle Collisions Research #Nuclear reactor physics and engineering #Particle physics theoretical and experimental studies #nucl-ex #nucl-th
paper · pdf · doi:10.1103/physrevc.80.014904
published as Phys.Rev.C80:014904,2009 · one typo in Table I corrected
openalex publication_date 2009/07/10 · arxiv created 2009/07/13 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We discuss how the different estimates of elliptic flow are influenced by flow fluctuations and nonflow effects. It is explained why the event-plane method yields estimates between the two-particle correlation methods and the multiparticle correlation methods. It is argued that nonflow effects and fluctuations cannot be disentangled without other assumptions. However, we provide equations where, with reasonable assumptions about fluctuations and nonflow, all measured values of elliptic flow converge to a unique mean v2,PP elliptic flow in the participant plane and, with a Gaussian assumption on eccentricity fluctuations, can be converted to the mean v2,RP in the reaction plane. Thus, the 20% spread in observed elliptic flow measurements from different analysis methods is no longer mysterious.