Photoproduction of isolated photon and jet at the DESY HERA
Andrzej Zembrzuski, Maria Krawczyk (Institute of Theoretical, Physics, Warsaw University, Poland)
TL;DR
This paper presents next-to-leading order QCD calculations for isolated photon and photon plus jet production at DESY HERA, comparing predictions with previous approximations and experimental data to improve theoretical understanding.
Contribution
It provides refined NLO QCD predictions for isolated photon and photon plus jet photoproduction, including comparisons with earlier models and experimental results.
Findings
Differences with previous small cone approximation are below 2%.
Theoretical uncertainties in cross section are discussed.
Comparison with H1 data and other NLO predictions is included.
Abstract
The next-to-leading order (NLO) QCD calculation for the isolated photon and isolated photon plus jet photoproduction at the ep collider DESY HERA is presented. The predictions for the isolated photon with no restrictions imposed on the jet are compared with the previous ones obtained in the small cone approximation, and the differences are found to be below 2%. The theoretical uncertainties in the cross section of the photoproduction of the photon plus jet are discussed. A short comparison with the new preliminary H1 data and with the NLO predictions of Fontannaz et al. is also presented.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · High-Energy Particle Collisions Research · Quantum Chromodynamics and Particle Interactions