2004/11/05 by F. Laue, Frank Laue · 21 citations
Physics and Astronomy · #Baryon #Coalescence (physics) #Electron #Elliptic flow #Hadron #Heavy ion #High-Energy Particle Collisions Research #Ion #Meson #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Parton #Physics #Quantum Chromodynamics and Particle Interactions #Quark #Quark–gluon plasma #nucl-ex
paper · pdf · doi:10.1088/0954-3899/31/4/004
published in Journal of Physics G Nuclear and Particle Physics 31(4), S27-S33 (IOP Publishing) · 10 pages, 7 figures Proceedings of the Hot Quarks 2004 Conference, July 18-24 2004, Taos Valley, New Mexico, USA to be published in Journal of Physics G
arxiv created 2004/11/05 · openalex publication_date 2005/03/18 · arxiv updated 2009/12/01 · openalex created_date 2021/02/01 · openalex updated_date 2026/08/05
Abstract. Recent measurements of elliptic flow (v2) and the nuclear modification factor (RCP) of strange mesons and baryons in the intermediate pT domain in Au+Au collisions demonstrate a scaling with the number-of-constituent-quarks. This suggests hadron production via quark coalescence from a thermalized parton system. Measuring the elliptic flow of charmed hadrons, which are believed to originate rather from fragmentation than from coalescence processes, might therefore change our view of hadron production in heavy ion collisions. While direct v2 measurements of charmed hadrons are currently not available, single electron v2 at sufficiently high transverse momenta can serve as a substitute. At transverse momenta above 2 GeV/c, the production of single electrons from nonphotonic sources is expected to be dominated by the decay of charmed hadrons. Simulations show a strong correlation between the flow of the charmed hadrons and the flow of their decay electrons for pT> 2 GeV/c. We will present preliminary STAR results from our single electron v2 measurements from Au+Au collisions at RHIC energies. Single Electron Elliptic Flow Measurements in Au+Au collisions from STAR 2 1.