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Article: Measurement of the Z(→ ℓ+ℓ−)γ production cross-section in pp collisions at √s = 13 TeV with the ATLAS detector

TitleMeasurement of the Z(→ ℓ+ℓ−)γ production cross-section in pp collisions at √s = 13 TeV with the ATLAS detector
Authors
KeywordsHadron-Hadron scattering (experiments)
Issue Date2020
PublisherSpringer Verlag (Germany): 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, 2020, v. 2020 n. 3, article no. 54 How to Cite?
AbstractThe production of a prompt photon in association with a Z boson is studied in proton-proton collisions at a centre-of-mass energy √s = 13 TeV. The analysis uses a data sample with an integrated luminosity of 139 fb−1 collected by the ATLAS detector at the LHC from 2015 to 2018. The production cross-section for the process pp → ℓ+ℓ−γ + X (ℓ = e, μ) is measured within a fiducial phase-space region defined by kinematic requirements on the photon and the leptons, and by isolation requirements on the photon. An experimental precision of 2.9% is achieved for the fiducial cross-section. Differential cross-sections are measured as a function of each of six kinematic variables characterising the ℓ+ℓ−γ system. The data are compared with theoretical predictions based on next-to-leading-order and next-to-next-to-leading-order perturbative QCD calculations. The impact of next-to-leading-order electroweak corrections is also considered.
Persistent Identifierhttp://hdl.handle.net/10722/286263
ISSN
2023 Impact Factor: 5.0
2023 SCImago Journal Rankings: 0.832
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorATLAS collaboration-
dc.contributor.authorLo, CY-
dc.contributor.authorParedes Hernandez, D-
dc.contributor.authorTu, Y-
dc.contributor.authorPizzimento, L-
dc.date.accessioned2020-08-31T07:01:28Z-
dc.date.available2020-08-31T07:01:28Z-
dc.date.issued2020-
dc.identifier.citationJournal of High Energy Physics, 2020, v. 2020 n. 3, article no. 54-
dc.identifier.issn1029-8479-
dc.identifier.urihttp://hdl.handle.net/10722/286263-
dc.description.abstractThe production of a prompt photon in association with a Z boson is studied in proton-proton collisions at a centre-of-mass energy √s = 13 TeV. The analysis uses a data sample with an integrated luminosity of 139 fb−1 collected by the ATLAS detector at the LHC from 2015 to 2018. The production cross-section for the process pp → ℓ+ℓ−γ + X (ℓ = e, μ) is measured within a fiducial phase-space region defined by kinematic requirements on the photon and the leptons, and by isolation requirements on the photon. An experimental precision of 2.9% is achieved for the fiducial cross-section. Differential cross-sections are measured as a function of each of six kinematic variables characterising the ℓ+ℓ−γ system. The data are compared with theoretical predictions based on next-to-leading-order and next-to-next-to-leading-order perturbative QCD calculations. The impact of next-to-leading-order electroweak corrections is also considered.-
dc.languageeng-
dc.publisherSpringer Verlag (Germany): 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.titleMeasurement of the Z(→ ℓ+ℓ−)γ production cross-section in pp collisions at √s = 13 TeV with the ATLAS detector-
dc.typeArticle-
dc.identifier.emailLo, CY: samuel3@hku.hk-
dc.identifier.emailParedes Hernandez, D: dparedes@hku.hk-
dc.identifier.emailTu, Y: yanjuntu@hku.hk-
dc.identifier.authorityTu, Y=rp01971-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1007/JHEP03(2020)054-
dc.identifier.scopuseid_2-s2.0-85081744973-
dc.identifier.hkuros313094-
dc.identifier.volume2020-
dc.identifier.issue3-
dc.identifier.spagearticle no. 54-
dc.identifier.epagearticle no. 54-
dc.identifier.isiWOS:000519163600001-
dc.publisher.placeGermany-
dc.identifier.issnl1029-8479-

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