2004/09/19 by Scott Pratt, Subrata Pal · 2 citations
Chemistry · Physics and Astronomy · #Chemistry #Elliptic flow #Flow (mathematics) #High-Energy Particle Collisions Research #Mechanics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Recombination #nucl-th
paper · pdf · doi:10.1103/physrevc.71.014905
published as Phys.Rev.C71:014905,2005 · 16 pages, 5 figures
arxiv created 2004/09/19 · openalex publication_date 2005/01/27 · arxiv updated 2014/11/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Elliptic flow systematics for different hadron species have been explained by quark coalescence models. It has been argued that the elliptic anisotropy v2 should scale with the number of quarks that comprise the hadron. We show how these arguments are sensitive to the relative role of anisotropies in the phase space density vs. anisotropies in the effective volume of emission. We also discuss the degree to which coalescence arguments differ from thermal models. Illustrative calculations based on solving the Boltzmann equation are presented along with the results of blast wave models. Although the issue is complicated, ambiguities might be clarified by measurements of source-size parameters for nucleons at higher transverse momenta.