TY  - JOUR
AU  - ATLAS Collaboration (Aad, G. et al
AU  - Aparisi Pozo, J. A.
AU  - Bailey, A. J.
AU  - Cabrera Urban, S.
AU  - Cardillo, F.
AU  - Castillo, F. L.
AU  - Castillo Gimenez, V.
AU  - Costa, M. J.
AU  - Didenko, M.
AU  - Escobar, C.
AU  - Estrada Pastor, O.
AU  - Fiorini, L.
AU  - Fullana Torregrosa, E.
AU  - Fuster, J.
AU  - Garcia, C.
AU  - Garcia Navarro, J. E.
AU  - Gonzalez de la Hoz, S.
AU  - Gonzalvo Rodriguez, G. R.
AU  - Guerrero Rojas, J. G. R.
AU  - Higon-Rodriguez, E.
AU  - Lacasta, C.
AU  - Lozano Bahilo, J. J.
AU  - Mamuzic, J.
AU  - Marti-Garcia, S.
AU  - Martinez Agullo, P.
AU  - Miralles Lopez, M.
AU  - Mitsou, V. A.
AU  - Moreno Llacer, M.
AU  - Navarro-Gonzalez, J.
AU  - Poveda, J.
AU  - Prades Ibañez, A.
AU  - Rodriguez Bosca, S.
AU  - Ruiz-Martinez, A.
AU  - Sabatini, P.
AU  - Salt, J.
AU  - Santra, A.
AU  - Sanchez Sebastian, V.
AU  - Sayago Galvan, I.
AU  - Soldevila, U.
AU  - Sanchez, J.
AU  - Torro Pastor, E.
AU  - Valero, A.
AU  - Valls Ferrer, J. A.
AU  - Villaplana Perez, M.
AU  - Vos, M.
PY  - 2021
DA  - 2021//
TI  - Measurement of the production cross section of pairs of isolated photons in pp collisions at 13 TeV with the ATLAS detector
T2  - J. High Energy Phys.
JO  - Journal of High Energy Physics
SP  - 169
EP  - 53pp
VL  - 11
IS  - 11
PB  - Springer
KW  - Hadron-Hadron scattering (experiments)
KW  - photon production
KW  - proton-proton scattering
KW  - QCD
AB  - 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.
SN  - 1029-8479
UR  - https://arxiv.org/abs/2107.09330
UR  - https://doi.org/10.1007/JHEP11(2021)169
DO  - 10.1007/JHEP11(2021)169
LA  - English
N1  - WOS:000728326100001
ID  - ATLASCollaborationAad_etal2021
ER  -