Elliptic flow of thermal photons and formation time of quark gluon plasma at RHIC

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 ${\tau }_0$ but fixed entropy (or particle rapidity density). The results are found to be quite sensitive to ${\tau }_0$. The $v_2$ for photons decreases as ${\tau }_0$ decreases and admits a larger contribution from the QGP phase which has a smaller $v_2$. The elliptic flow coefficient for hadrons, on the other hand, is only marginally dependent on ${\tau }_0$.

arXiv comment2 extra figures and discussion added. To appear in Physical Review C (Rapid Communication)

References in corpus (36)

• Suppression of Hadrons with Large Transverse Momentum in Central Au+Au Collisions at $sqrt {s sub {sub {NN}}}_ = 130 GeV
• Radial and elliptic flow at RHIC: further predictions
• Transverse momentum and collision energy dependence of high $p_T$ hadron suppression in Au+Au collisions at ultrarelativistic energies
• Hadronization in heavy ion collisions: Recombination and fragmentation of partons
• Elliptic Flow of Identified Hadrons in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Bottom-up thermalization in heavy ion collisions
• Anisotropic transverse flow and the quark-hadron phase transition
• Photon Emission from Quark-Gluon Plasma: Complete Leading Order Results
• Thermalization of gluons in ultrarelativistic heavy ion collisions by including three-body interactions in a parton cascade
• High $p_T$ Azimuthal Asymmetry in Non-central A+A at RHIC
• Hadronic Production of Thermal Photons
• Scaling of transverse energies and multiplicities with atomic number and energy in ultrarelativistic nuclear collisions
• Identified Particle Elliptic Flow in Au+Au Collisions at $\sqrt{s_{{}_{NN}}}=130$ GeV}
• Dynamics of Hot Bulk QCD Matter: from the Quark-Gluon Plasma to Hadronic Freeze-Out
• QCD Plasma Instabilities and Bottom-Up Thermalization
• Parton Equilibration in Relativistic Heavy Ion Collisions
• Centrality Dependence of Direct Photon Production in sqrt(s_NN) = 200 GeV Au+Au Collisions
• High energy photons from passage of jets through quark gluon plasma
• Azimuthal anisotropy and correlations in the hard scattering regime at RHIC
• Jet Quenching and Azimuthal Anisotropy of Large $p_T$ Spectra in Non-central High-energy Heavy-ion Collisions
• Elliptic flow of thermal photons in relativistic nuclear collisions
• A critical phenomenological study of inclusive photon production in hadronic collisions
• Azimuthal anisotropy of K0s and Lambda prduction at mid-rapidity from Au+Au collisions at root s = 130 GeV
• Scaling Distributions of Quarks, Mesons and Proton for all $p_T$, Energy and Centrality
• Electromagnetic radiation from nuclear collisions at RHIC energies
• Expanding Quark-Gluon Plasmas: Transverse Flow, Chemical Equilibration and Electromagnetic Radiation
• Screening of initial parton production in ultrarelativistic heavy-ion collisions
• Anisotropic flow and jet quenching in ultra-relativistic U+U collisions
• Parton rescattering and screening in Au+Au collisions at RHIC
• Elliptic flow of thermal dileptons in relativistic nuclear collisions
• Light from Cascading Partons in Relativistic Heavy-Ion Collisions
• Centrality Dependence of Direct Photons in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Chemical equilibration of quarks and gluons at RHIC and LHC energies
• Identified charged particle azimuthal anisotropy in PHENIX at RHIC
• Dynamics of the Landau-Pomeranchuk-Migdal Effect in Au+Au Collisions at 200 AGeV
• Elliptic flow of thermal photons and dileptons

Cited by in corpus (42)

• Observation of direct-photon collective flow in sqrt(s_NN)=200 GeV Au+Au collisions
• Azimuthally anisotropic emission of low-momentum direct photons in Au$+$Au collisions at $\sqrt{s_{{}_{NN}}}=200$ GeV
• Pseudo-Critical Enhancement of Thermal Photons in Relativistic Heavy-Ion Collisions
• Anisotropic flow of thermal photons as a quark-gluon plasma viscometer
• Direct real photons in relativistic heavy ion collisions
• Elliptic flow of thermal photons from event-by-event hydrodynamic model
• Hydrodynamics at RHIC and LHC: What have we learned?
• Systematics of the charged-hadron P_T spectrum and the nuclear suppression factor in heavy-ion collisions from sqrt{s}=200 GeV to sqrt{s} =2.76 TeV
• Thermal photon $v_2$ with slow quark chemical equilibration
• Direct photon elliptic flow in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Enhancement of thermal photon production in event-by-event hydrodynamics
• Ellipticity of photon emission from strongly magnetized hot QCD plasma
• Collision centrality and ${\tau }_0$ dependence of the emission of thermal photons from fluctuating initial state in ideal hydrodynamic calculation
• Elliptic flow of thermal photons in heavy-ion collisions at Relativistic Heavy Ion Collider and Large Hadron Collider
• A Tale of Tails: Photon Rates and Flow in Ultra-Relativistic Heavy Ion Collisions
• Photon production from gluon mediated quark-anti-quark annihilation at confinement
• Elliptic flow of thermal photons in Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV
• Prompt, pre-equilibrium, and thermal photons in relativistic nuclear collisions
• Formation Time of QGP from Thermal Photon Elliptic Flow
• Electromagnetic probes
• Spectra and elliptic flow of thermal photons from full overlap U+U collisions at RHIC
• Triangular flow of thermal photons from an event-by-event hydrodynamic model for 2.76A TeV Pb+Pb collisions at LHC
• The low and intermediate mass dilepton and photon results
• Photon production from Pb+Pb collisions at {$\sqrt{s_{\mathrm{NN}}}$} = 5.02 TeV at LHC and at {$\sqrt{s_{\mathrm{NN}}}$} = 39 TeV at FCC
• Photon HBT interferometry for non-central heavy-ion collisions
• Single photons from relativistic collision of lead nuclei at CERN SPS: A reanalysis
• Heavy Quark Production from Relativistic Heavy Ion Collisions
• The effect of neutron skin on inclusive prompt photon production in Pb~+~Pb collisions at the LHC
• Effective distributions of quasi-particles for thermal photons
• Effect of initial-state nucleon shadowing on the elliptic flow of thermal photons
• Direct Photons in Hydrodynamic Modeling of Relativistic Nuclear Collisions
• Ratio of photon anisotropic flow in relativistic heavy ion collisions
• Production and anisotropic flow of thermal photons in collision of $\alpha$-clustered carbon with heavy nuclei at relativistic energies
• Direct photons in Au+Au collisions measured with the PHENIX detector at RHIC
• Photon and dilepton emission anisotropy for a magnetized quark-gluon plasma
• System size dependence of nuclear modification and azimuthal anisotropy of jet quenching
• Heavy Flavor, Quarkonia, and Electroweak Probes at Quark Matter 2012
• The di-lepton physics program at STAR
• Thermal photon production in Au+Au collisions: viscous corrections in two different hydrodynamic formalisms
• Time Evolution of Thermal Photon Elliptic Flow
• Electromagnetic emission from hot medium measured by the PHENIX experiment at RHIC
• Hydrodynamic model of heavy-ion collisions with low momentum components