Elliptic flow of thermal photons and formation time of quark gluon plasma at energies available at the BNL Relativistic Heavy Ion Collider (RHIC)

2008/09/30 by Rupa Chatterjee, Dinesh Kumar Srivastava, Dinesh K. Srivastava · 2 citations
Physics and Astronomy · #Elliptic flow #Hadron #Heavy ion #High-Energy Particle Collisions Research #Ion #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Photon #Physics #Plasma #Quantum Chromodynamics and Particle Interactions #Quantum mechanics #Quark #Quark–gluon plasma #Rapidity #Relativistic Heavy Ion Collider #hep-ph #nucl-ex #nucl-th

paper · pdf · doi:10.1103/physrevc.79.021901

published as Phys.Rev.C79:021901,2009 · 2 extra figures and discussion added. To appear in Physical Review C (Rapid Communication)

arxiv created 2009/01/23 · openalex publication_date 2009/02/04 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We calculate the elliptic flow of thermal photons from Au+Au collisions at RHIC energies for a range of values for the formation time \ensuremathτ₀ but a fixed entropy (or particle rapidity density). The results are found to be quite sensitive to \ensuremathτ₀. The value of v₂ for photons decreases as \ensuremathτ₀ decreases and admits a larger contribution from the quark gluon plasma phase, which has a smaller v₂. The elliptic flow coefficient for hadrons, however, is only marginally dependent on \ensuremathτ₀.

Citations

• Elliptic Flow of Identified Hadrons inAu+AuCollisions atsNN=200 GeV
• Photon emission from quark-gluon plasma: complete leading order results
• Electromagnetic radiation from nuclear collisions at ultrarelativistic energies

Cited by

• Systematics of the charged-hadronPTspectrum and the nuclear suppression factor in heavy-ion collisions fromsNN=200GeV tosNN=2.76TeV
• Direct real photons in relativistic heavy ion collisions