Speaker
Description
Direct photon—jet pairs are produced in the initial hard scattering of an ion collision and the photon is not affected by the quark-gluon plasma, while the jet loses energy. Therefore, photon-jet pairs are good systems for studying jet energy loss event-by-event. Obtaining direct photons is challenging because of the myriad of background photons and typically a statistical subtraction method is used in A+A at RHIC. Instead of a statistical method, we use a direct method to obtain isolated photons by using an isolation cut similar to those used in direct photon identification in p+p collisions. This isolation cut provides for a cleaner sample of direct photons, potentially reducing the systematic uncertainties on direct photon-hadron correlations when compared to the statistical subtraction sample. We present the status of centrality-dependent direct photon-hadron angular correlations and fragmentation functions in A+A using recent high-statistics PHENIX datasets.
| Preferred Track | Correlations and Fluctuations |
|---|---|
| Collaboration | PHENIX |
