Measurement of isolated-photon plus two-jet production in pp collisions at √s=13 TeV with the ATLAS detector

Aad, G, Abbott, B, Abbott, DC, Abud, A Abed, Abeling, K, Abhayasinghe, DK, Abidi, SH, AbouZeid, OS, Abraham, NL, Abramowicz, H
et al (show 2917 more authors) (2020) Measurement of isolated-photon plus two-jet production in pp collisions at √s=13 TeV with the ATLAS detector. JOURNAL OF HIGH ENERGY PHYSICS, 03 (3). 179-.

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The dynamics of isolated-photon plus two-jet production in $pp$ collisions at a centre-of-mass energy of 13 TeV are studied with the ATLAS detector at the LHC using a dataset corresponding to an integrated luminosity of 36.1 fb$^{-1}$. Cross sections are measured as functions of a variety of observables, including angular correlations and invariant masses of the objects in the final state, $\gamma+jet+jet$. Measurements are also performed in phase-space regions enriched in each of the two underlying physical mechanisms, namely direct and fragmentation processes. The measurements cover the range of photon (jet) transverse momenta from 150 GeV (100 GeV) to 2 TeV. The tree-level plus parton-shower predictions from SHERPA and PYTHIA as well as the next-to-leading-order QCD predictions from SHERPA are compared with the measurements. The next-to-leading-order QCD predictions describe the data adequately in shape and normalisation except for regions of phase space such as those with high values of the invariant mass or rapidity separation of the two jets, where the predictions overestimate the data.

Item Type: Article
Additional Information: 48 pages in total, author list starting page 32, 9 figures, 2 tables, published version in JHEP. All figures including auxiliary figures are available at
Uncontrolled Keywords: Hadron-Hadron scattering (experiments), Hard scattering, Jets, Photon production
Depositing User: Symplectic Admin
Date Deposited: 04 May 2020 10:23
Last Modified: 10 Oct 2023 16:25
DOI: 10.1007/JHEP03(2020)179
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