Prompt Photons in Photoproduction at HERA

TL;DR

This paper reports on the measurement of prompt photon production in photoproduction at HERA, comparing experimental cross sections with theoretical predictions and using the data to infer quark transverse momentum in the proton.

Contribution

It provides new experimental data on prompt photon production in photoproduction and uses these results to extract the effective transverse momentum of quarks in the proton.

Findings

Measured cross sections for inclusive prompt photons.

Compared prompt photon+jet data with theoretical models.

Estimated the effective transverse momentum of quarks in the proton.

Abstract

The production of prompt photons in photoproduction reactions in the ZEUS experiment is discussed. Cross sections for inclusive prompt photons and for prompt photons accompanied by jets are compared with theory, and the latter are used to determine the effective transverse momentum of the quarks in the proton.