Photons at RHIC: The role of viscosity and of initial state fluctuations

Abstract

We study real photons produced in heavy ion collisions at RHIC, and we calculate their spectrum and its azimuthal momentum anisotropy. The photons from a variety of sources are included, and the interplay and the time-evolution of those sources are modelled in a full 3D hydrodynamic simulation. We quantify the v_2 of thermal photons produced in ideal and viscous fluids, and the consequences of using different initial conditions are explored.

Talk given at the 22nd International Conference On Ultra-Relativistic Nucleus-Nucleus Collisions (Quark Matter 2011), Annecy, France, May 23 - 28, 2011. 4 pages, 3 figures

References in corpus (4)

• Elliptic and triangular flow in event-by-event (3+1)D viscous hydrodynamics
• Electromagnetic radiation from nuclear collisions at RHIC energies
• Elliptic flow of thermal photons and dileptons
• Quenching of hadron and photon spectra in heavy-ion collisions from RHIC to LHC

Cited by in corpus (12)

• Effective QCD and transport description of dilepton and photon production in heavy-ion collisions and elementary processes
• Bulk viscosity, particle spectra and flow in heavy-ion collisions
• Centrality dependence of the direct photon yield and elliptic flow in heavy-ion collisions at sqrt(s)=200 GeV
• Hadronic and partonic sources of direct photons in relativistic heavy-ion collisions
• MARTINI for heavy quarks: initialization, parton evolution, and hadronization with event generation
• Photon elliptic flow in relativistic heavy-ion collisions: hadronic versus partonic sources
• Collision centrality and ${\tau }_0$ dependence of the emission of thermal photons from fluctuating initial state in ideal hydrodynamic calculation
• Phenomenology of photon and di-lepton production in relativistic nuclear collisions
• Flow in heavy-ion collisions - Theory Perspective
• Electromagnetic recombination spectra at the quark-hadron phase transition
• Iterative Fluiddynamics
• Emissivity and conductivity of parton-hadron matter