Speaker
Dr
Ali Hanks
(Stony Brook University)
Description
Measurements of direct photon tagged jets, in the form of photon-hadron correlations, are unique as an experimental tool for gaining access to the initial parton kinematics in a hard scattering. Once produced, these photons will not interact strongly with the medium produced in heavy-ion collisions, providing a calibrated measure of the pre-energy loss properties of the opposing parton and giving unique insight into how jets interact with the quark-gluon plasma (QGP). To understand the observed modification to jets opposite a direct photon, it is necessary to make similar base-line measurements within a reference system. Previously this was done using p+p collisions, however cold nuclear matter effects may also play a role, making similar baseline measurements in d(p)$+$A important. Additionally, recent results from d$+$Au and p$+$Pb suggest that there may be medium-like effects present, making clean measurements of the initial parton energy in a hard scattering crucial. We present the most recent results for direct photon-hadron correlations in d$+$Au from PHENIX.
| On behalf of collaboration: | PHENIX |
|---|
Primary author
Dr
Ali Hanks
(Stony Brook University)
