PoS - Proceedings of Science
Volume 364 - European Physical Society Conference on High Energy Physics (EPS-HEP2019) - Top and Electroweak Physics
Measurement of photon production in proton-proton collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
J. Cantero*  on behalf of the ATLAS Collaboration
Full text: pdf
Pre-published on: June 14, 2020
Published on: November 12, 2020
Abstract
The production of prompt photons in proton-proton collisions at the LHC provides a testing ground for perturbative QCD with a hard colourless probe. Since the dominant production mechanism in proton-proton collisions proceeds via the $qg\rightarrow g\gamma$ process, measurements of prompt-photon and photon plus jet production are sensitive at leading order to the gluon density in the proton. This contribution presents the latest ATLAS measurements of the ratio of the cross sections for inclusive isolated-photon production at centre-of-mass energies of 13 and 8 TeV, the measurements of isolated-photon plus jet cross sections at $\sqrt{s}$ = 13 TeV using a dataset with an integrated luminosity of 3.2 fb$^{-1}$ and the differential cross section for isolated-photon production measured at $\sqrt{s}$ = 13 TeV using an integrated luminosity of 36.1 fb$^{-1}$. The measurements are compared to next-to-leading-order QCD as well as to next-to-next-to-leading-order QCD calculations.
DOI: https://doi.org/10.22323/1.364.0648
How to cite

Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating very compact bibliographies which can be beneficial to authors and readers, and in "proceeding" format which is more detailed and complete.

Open Access
Creative Commons LicenseCopyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.