Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/3140
Title: Measurements of inclusive and differential fiducial cross-sections of tt¯ ? production in leptonic final states at ?s=13TeV in ATLAS
Authors: The ATLAS Collaboration
Sultansoy, Saleh
Keywords: Collisions 
 jets 
 proton–proton collisions
Issue Date: 2019
Publisher: Springer New York LLC
Source: ATLAS Collaboration. (2019).Measurements of inclusive and differential fiducial cross-sections of tt¯ ? production in leptonic final states at ?s=13TeV in ATLAS. European Physical Journal C, 79(5).
Abstract: Inclusive and differential cross-sections for the production of a top-quark pair in association with a photon are measured with proton-proton collision data corresponding to an integrated luminosity of 36.1 fb-1, collected by the ATLAS detector at the LHC in 2015 and 2016 at a centre-of-mass energy of 13 TeV. The measurements are performed in single-lepton and dilepton final states in a fiducial volume. Events with exactly one photon, one or two leptons, a channel-dependent minimum number of jets, and at least one b-jet are selected. Neural network algorithms are used to separate the signal from the backgrounds. The fiducial cross-sections are measured to be 521±9(stat.)±41(sys.)fb and 69±3(stat.)±4(sys.)fb for the single-lepton and dilepton channels, respectively. The differential cross-sections are measured as a function of photon transverse momentum, photon absolute pseudorapidity, and angular distance between the photon and its closest lepton in both channels, as well as azimuthal opening angle and absolute pseudorapidity difference between the two leptons in the dilepton channel. All measurements are in agreement with the theoretical predictions. © 2019, CERN for the benefit of the ATLAS collaboration.
URI: https://link.springer.com/article/10.1140%2Fepjc%2Fs10052-019-6849-6
https://hdl.handle.net/20.500.11851/3140
ISSN:  14346044
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

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