Photon and dilepton production in the Quark-Gluon plasma: perturbation theory vs lattice QCD

Abstract

This talk reviews the status of QCD calculations of photon and dilepton production rates in a Quark-Gluon plasma. Theses rates are known to order $\mathcal{O}({\alpha }_s)$. Their calculations involve various resummations to account for well identified physical effects that are briefly described. Lattice calculations of the spectral functions give also access to the dilepton rates. Comparison with perturbative results points to inconsistencies in both approaches when the dilepton energy becomes small.

Talk given at Hard Probes 2004, 6 pages, 8 figures

References in corpus (6)

• The electrical conductivity and soft photon emissivity of the QCD plasma
• Landau-Pomeranchuk-Migdal resummation for dilepton production
• QCD calculations of thermal photon and dilepton production
• Transport coefficients from the lattice?
• In-medium effects on electromagnetic probes
• Dileptons from hot heavy static photons

Cited by in corpus (11)

• Thermal dilepton rate and electrical conductivity: An analysis of vector current correlation functions in quenched lattice QCD
• Photon and dilepton production in supersymmetric Yang-Mills plasma
• Results from the Relativistic Heavy Ion Collider
• The electrical conductivity of a pion gas
• Electromagnetic signatures of a strongly coupled anisotropic plasma
• Holographic dilepton production in a thermalizing plasma
• On the temperature dependence of the electrical conductivity in hot quenched lattice QCD
• Dilepton production at next-to-leading order and intermediate invariant-mass observables
• Landau-Pomeranchuck-Migdal effect in a quark-gluon plasma and the Boltzmann equation
• Electrical conductivity and thermal dilepton rate from quenched lattice QCD
• Virtual Photon Emission from Quark-Gluon Plasma