%0 Journal Article
%T Measurement of the production cross section of pairs of isolated photons in pp collisions at 13 TeV with the ATLAS detector
%A ATLAS Collaboration (Aad, G. et al
%A Aparisi Pozo, J. A.
%A Bailey, A. J.
%A Cabrera Urban, S.
%A Cardillo, F.
%A Castillo, F. L.
%A Castillo Gimenez, V.
%A Costa, M. J.
%A Didenko, M.
%A Escobar, C.
%A Estrada Pastor, O.
%A Fiorini, L.
%A Fullana Torregrosa, E.
%A Fuster, J.
%A Garcia, C.
%A Garcia Navarro, J. E.
%A Gonzalez de la Hoz, S.
%A Gonzalvo Rodriguez, G. R.
%A Guerrero Rojas, J. G. R.
%A Higon-Rodriguez, E.
%A Lacasta, C.
%A Lozano Bahilo, J. J.
%A Mamuzic, J.
%A Marti-Garcia, S.
%A Martinez Agullo, P.
%A Miralles Lopez, M.
%A Mitsou, V. A.
%A Moreno Llacer, M.
%A Navarro-Gonzalez, J.
%A Poveda, J.
%A Prades Ibañez, A.
%A Rodriguez Bosca, S.
%A Ruiz-Martinez, A.
%A Sabatini, P.
%A Salt, J.
%A Santra, A.
%A Sanchez Sebastian, V.
%A Sayago Galvan, I.
%A Soldevila, U.
%A Sanchez, J.
%A Torro Pastor, E.
%A Valero, A.
%A Valls Ferrer, J. A.
%A Villaplana Perez, M.
%A Vos, M.
%J Journal of High Energy Physics
%D 2021
%V 11
%N 11
%I Springer
%@ 1029-8479
%G English
%F ATLASCollaborationAad_etal2021
%O WOS:000728326100001
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=5054), last updated on Wed, 29 Dec 2021 23:03:06 +0000
%X A measurement of prompt photon-pair production in proton-proton collisions at root s = 13 TeV is presented. The data were recorded by the ATLAS detector at the LHC with an integrated luminosity of 139 fb(-1). Events with two photons in the wellinstrumented region of the detector are selected. The photons are required to be isolated and have a transverse momentum of p(T,gamma 1(2)) > 40 (30) GeV for the leading (sub-leading) photon. The differential cross sections as functions of several observables for the diphoton system are measured and compared with theoretical predictions from state-of-the-art Monte Carlo and fixed-order calculations. The QCD predictions from next-to-next-to-leadingorder calculations and multi-leg merged calculations are able to describe the measured integrated and differential cross sections within uncertainties, whereas lower-order calculations show significant deviations, demonstrating that higher-order perturbative QCD corrections are crucial for this process. The resummed predictions with parton showers additionally provide an excellent description of the low transverse-momentum regime of the diphoton system.
%K Hadron-Hadron scattering (experiments)
%K photon production
%K proton-proton scattering
%K QCD
%R 10.1007/JHEP11(2021)169
%U https://arxiv.org/abs/2107.09330
%U https://doi.org/10.1007/JHEP11(2021)169
%P 169-53pp