Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/3127
 Title: Measurement of W±Z production cross sections and gauge boson polarisation in pp collisions at ?s=13TeV with the ATLAS detector Authors: The ATLAS CollaborationSultansoy, Saleh Keywords: Collisionsjetsproton–proton collisions Issue Date: 2019 Publisher: Springer New York LLC Source: ATLAS collaboration. (2019). Measurement of $$W^{\pm} Z$$ W±Z production cross sections and gauge boson polarisation in pp collisions at $$\sqrt {s}= 13~\text {TeV}$$ s= 13TeV with the ATLAS detector. European Physical Journal C, 79(1902.05759), 1-34. Abstract: This paper presents measurements of W±Z production cross sections in pp collisions at a centre-of-mass energy of 13 TeV. The data were collected in 2015 and 2016 by the ATLAS experiment at the Large Hadron Collider, and correspond to an integrated luminosity of 36.1fb-1. The W±Z candidate events are reconstructed using leptonic decay modes of the gauge bosons into electrons and muons. The measured inclusive cross section in the detector fiducial region for a single leptonic decay mode is ?W±Z??????fid.=63.7±1.0(stat.)±2.3(syst.)±1.4(lumi.) fb, reproduced by the next-to-next-to-leading-order Standard Model prediction of 61.5-1.3+1.4 fb. Cross sections for W+Z and W-Z production and their ratio are presented as well as differential cross sections for several kinematic observables. An analysis of angular distributions of leptons from decays of W and Z bosons is performed for the first time in pair-produced events in hadronic collisions, and integrated helicity fractions in the detector fiducial region are measured for the W and Z bosons separately. Of particular interest, the longitudinal helicity fraction of pair-produced vector bosons is also measured. © 2019, CERN for the benefit of the ATLAS collaboration. URI: https://link.springer.com/article/10.1140%2Fepjc%2Fs10052-019-7027-6https://hdl.handle.net/20.500.11851/3127 ISSN: 1434-6044 Appears in Collections: Malzeme Bilimi ve Nanoteknoloji Mühendisliği Bölümü / Department of Material Science & Nanotechnology EngineeringScopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications CollectionWoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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