Direct Photons at RHIC

2009/08/17 by Klaus Johannes Reygers, Reygers, Klaus · 1 citation
Physics and Astronomy · #FOS: Physical sciences #High-Energy Particle Collisions Research #Nuclear Experiment (nucl-ex) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.0908.2382

openalex publication_date 2009/08/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

A brief overview of direct-photon measurements in p+p and Au+Au collisions at sqrt(s_NN) = 200 GeV with the PHENIX experiment at the Relativistic Heavy Ion Collider (RHIC) is given. Direct-photon yields for pT > 4 GeV/c and photon-hadron azimuthal correlations were determined with the aid of an electromagnetic calorimeter. By detecting e+e- pairs from the internal conversion of virtual photons direct-photon yields were measured between 1 < pT < 4 GeV/c. In Au+Au collisions thermal photons from a quark-gluon plasma (QGP) are expected to contribute significantly to the total direct-photon yield in this range.

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• Conversion of photons to dileptons in the Kroll-Wada and parton shower approaches

Related

• Direct Photons at RHIC
• Direct Photons and Photon-Hadron Correlations at PHENIX
• Measurement of photons via conversion pairs in Au+Au collisions at sqrt(s_NN) = 200 GeV with the PHENIX experiment at RHIC
• Direct photons from Au+Au collisions at RHIC: QGP vs. hot hadronic gas
• Thermal photon measurements at PHENIX