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Article: Measurement of the production cross section of pairs of isolated photons in pp collisions at 13 TeV with the ATLAS detector

TitleMeasurement of the production cross section of pairs of isolated photons in pp collisions at 13 TeV with the ATLAS detector
Authors
KeywordsHadron-Hadron scattering (experiments)
photon production
proton-proton scattering
QCD
Issue Date2021
PublisherSpringer Verlag: SCOAP3. The Journal's web site is located at http://www.springer.com/physics/particle+and+nuclear+physics/journal/13130
Citation
Journal of High Energy Physics, 2021, v. 2021 n. 11, article no. 169 How to Cite?
AbstractA measurement of prompt photon-pair production in proton-proton collisions at √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 well-instrumented region of the detector are selected. The photons are required to be isolated and have a transverse momentum of pT,γ1(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-leading-order 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.
Persistent Identifierhttp://hdl.handle.net/10722/309885
ISSN
2021 Impact Factor: 6.379
2020 SCImago Journal Rankings: 0.998
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorThe ATLAS collaboration-
dc.contributor.authorParedes Hernandez, D-
dc.contributor.authorPeng, C-
dc.contributor.authorTam, KC-
dc.contributor.authorTu, Y-
dc.date.accessioned2022-01-10T09:15:16Z-
dc.date.available2022-01-10T09:15:16Z-
dc.date.issued2021-
dc.identifier.citationJournal of High Energy Physics, 2021, v. 2021 n. 11, article no. 169-
dc.identifier.issn1029-8479-
dc.identifier.urihttp://hdl.handle.net/10722/309885-
dc.description.abstractA measurement of prompt photon-pair production in proton-proton collisions at √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 well-instrumented region of the detector are selected. The photons are required to be isolated and have a transverse momentum of pT,γ1(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-leading-order 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.-
dc.languageeng-
dc.publisherSpringer Verlag: SCOAP3. The Journal's web site is located at http://www.springer.com/physics/particle+and+nuclear+physics/journal/13130-
dc.relation.ispartofJournal of High Energy Physics-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.subjectHadron-Hadron scattering (experiments)-
dc.subjectphoton production-
dc.subjectproton-proton scattering-
dc.subjectQCD-
dc.titleMeasurement of the production cross section of pairs of isolated photons in pp collisions at 13 TeV with the ATLAS detector-
dc.typeArticle-
dc.identifier.emailParedes Hernandez, D: dparedes@hku.hk-
dc.identifier.emailPeng, C: samp0808@HKUCC-COM.hku.hk-
dc.identifier.emailTu, Y: yanjuntu@hku.hk-
dc.identifier.authorityTu, Y=rp01971-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1007/JHEP11(2021)169-
dc.identifier.scopuseid_2-s2.0-85120959330-
dc.identifier.hkuros331359-
dc.identifier.volume2021-
dc.identifier.issue11-
dc.identifier.spagearticle no. 169-
dc.identifier.epagearticle no. 169-
dc.identifier.isiWOS:000728326100001-
dc.publisher.placeGermany-

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