Relative-angle modes of pair correlations produce sign-changing modifications to the in-medium photon spectrum with magnitudes comparable to the factorized contribution.
A Systematic study on direct photon production from central heavy ion collisions
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abstract
We investigate the production of direct photons in central Au-Au collisions at the relativistic Heavy-Ion Collider (RHIC) at 200 GeV per nucleon, considering all possible sources. We treat thermal photons emitted from a quark-gluon plasma and from a hadron gas, based on a realistic thermodynamic expansion. Hard photons from elementary nucleon-nucleon scatterings are included: primordial elementary scatterings are certainly dominant at large transverse momenta, but also secondary photons from jet fragmentation and jet-photon conversion cannot be ignored. In both cases we study the effect of energy loss, and we also consider photons emitted from bremsstrahlung gluons via fragmentation.
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hep-ph 2years
2026 2verdicts
UNVERDICTED 2representative citing papers
Accounting for prompt photons in a viscous hydrodynamic model of Au+Au collisions explains the measured v2 and v3 of direct photons, with good agreement in mid-central collisions but centrality-dependent discrepancies.
citing papers explorer
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Probing Pair Correlations in QCD Matter with Photon Spectra
Relative-angle modes of pair correlations produce sign-changing modifications to the in-medium photon spectrum with magnitudes comparable to the factorized contribution.
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On the Role of Prompt Photons in the Anisotropic Emission of Direct Photons -- Direct Photons from Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV with IP-Glasma Initial Condition
Accounting for prompt photons in a viscous hydrodynamic model of Au+Au collisions explains the measured v2 and v3 of direct photons, with good agreement in mid-central collisions but centrality-dependent discrepancies.