Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/8101
Title: Measurement of the production cross section of pairs of isolated photons in pp collisions at 13 TeV with the ATLAS detector
Authors: Aad, G.
Abbott, B.
Abbott, D. C.
Abed Abud, A.
Abeling, K.
Abhayasinghe, D. K.
Sultansoy, Saleh
The ATLAS Collaboration
Keywords: Hadron-Hadron scattering (experiments)
photon production
proton-proton scattering
QCD
Parton Distributions
Publisher: Springer
Abstract: 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.
URI: https://doi.org/10.1007/JHEP11(2021)169
https://hdl.handle.net/20.500.11851/8101
ISSN: 1029-8479
Appears in Collections:Malzeme Bilimi ve Nanoteknoloji Mühendisliği Bölümü / Department of Material Science & Nanotechnology Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

Show full item record



CORE Recommender

SCOPUSTM   
Citations

1
checked on Mar 23, 2024

WEB OF SCIENCETM
Citations

8
checked on Mar 9, 2024

Page view(s)

28
checked on Mar 25, 2024

Google ScholarTM

Check




Altmetric


Items in GCRIS Repository are protected by copyright, with all rights reserved, unless otherwise indicated.