Recent developments in the theory of electromagnetic probes in relativistic heavy-ion collisions

Abstract

The theoretical developments in the study of electromagnetic radiation in relativistic heavy-ion collisions are reviewed. The recent progress in the rates for photon and lepton pair production is discussed. Together with the improvements in the hydrodynamic descriptions of the bulk medium, the combined effort is discussed to resolve the "direct photon flow puzzle" in the RHIC and the LHC experiments. Further prediction of the direct photon production in high multiplicity proton-nucleus collisions at the LHC energy can serve as a signature of the quark gluon plasma formation in these small systems. Phenomenological study of dilepton production at finite net baryon density is highlighted at the collision energies available for the RHIC beam energy scan program.

6 pages, 3 figures; A plenary talk given at the 7th International Conference on Hard and Electromagnetic Probes of High-Energy Nuclear Collisions (Hard Probes 2015), June 29-July 3 2015, Montreal, QC, Canada

References in corpus (12)

• Pseudo-Critical Enhancement of Thermal Photons in Relativistic Heavy-Ion Collisions
• The Glasma, Photons and the Implications of Anisotropy
• Thermal photon $v_2$ with slow quark chemical equilibration
• An Overview of STAR Experimental Results
• Universal Parametrization of Thermal Photon Rates in Hadronic Matter
• Enhancement of thermal photon production in event-by-event hydrodynamics
• Photon Emission from a Momentum Anisotropic Quark-Gluon Plasma
• Event-by-event direct photon anisotropic flow in relativistic heavy-ion collisions
• Jet transport and photon bremsstrahlung via longitudinal and transverse scattering
• Probing the non-equilibrium dynamics of hot and dense QCD with dileptons
• Dilepton emission in high-energy heavy-ion collisions with dissipative hydrodynamics
• Probing the dissipative properties of a strongly interacting medium with dileptons

Cited by in corpus (5)

• Dilepton production rate in a hot and magnetized quark-gluon plasma
• Holographic Photon Production in Heavy Ion Collisions
• Photons from thermalizing matter in heavy ion collisions
• Electromagnetic Radiation from QCD Matter: Theory Overview
• Electromagnetic radiation and collectivity in small quark-gluon droplets