Measurement of the inclusive isolated-photon cross section in pp collisions at s√s = 13 TeV using 36 fb−1 of ATLAS data
Date
2019
Authors
Aad, G.
Abbott, B.
Abbott, D.C.
Abdinov, O.
Abed Abud, A.
Abeling, K.
Abhayasinghe, D.K.
Abidi, S.H.
AbouZeid, O.S.
Abraham, N.L.
Journal Title
Journal ISSN
Volume Title
Publisher
Journal of High Energy Physics
Abstract
The differential cross section for isolated-photon production in pp collisions is measured at a centre-of-mass energy of 13 TeV with the ATLAS detector at the LHC using an integrated luminosity of 36.1 fb−1. The differential cross section is presented as a function of the photon transverse energy in different regions of photon pseudorapidity. The differential cross section as a function of the absolute value of the photon pseudorapidity is also presented in different regions of photon transverse energy. Next-to-leading-order QCD calculations from Jetphox and Sherpa as well as next-to-next-to-leading-order QCD calculations from Nnlojet are compared with the measurement, using several parameterisations of the proton parton distribution functions. The predictions provide a good description of the data within the experimental and theoretical uncertainties.
Description
Keywords
Hadron-Hadron scattering (experiments), Photon production, QCD
Citation
Aad, G., Abbott, B., Abbott, D. C., Abdinov, O., Abed Abud, A., Abeling, K., … Zwalinksi, L. (2019). Measurement of the inclusive isolated-photon cross section in pp collisions at s√s = 13 TeV using 36 fb−1 of ATLAS data. Journal of High Energy Physics, 2019(10). https://doi.org/10.1007/JHEP10(2019)203