Speaker
Description
This talk presents new measurements of prompt photon production in pp and p--Pb collisions by ALICE. We present the first determination of the nuclear modification factor of isolated prompt photon production in p--Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV. Together with a recent analysis at $\sqrt{s_{\rm NN}}$ of 8.16 TeV, this new measurement constrains the low-$x$ structure of matter in a regime inaccessible to previous prompt photon measurements, where cold nuclear matter effects are expected to be sizeable. This talk also presents a new analysis of prompt photon production in pp collisions at $\sqrt{s_{\rm NN}}$ = 13.6 TeV, based on a novel statistical approach which measures inclusive prompt photon production as a continuous function of isolation energy. This statistical approach may provide new constraints on the theoretical description of fragmentation--photon production, which to date has relied primarily on $e^+e^-$ collider data.
| Category | Experiment |
|---|---|
| Collaboration (if applicable) | ALICE |
