Measurement of the inclusive Formula Presented production cross section in the lepton+jets channel in pp collisions at Formula Presented with the ATLAS detector using support vector machines



Jackson, P ORCID: 0000-0002-0847-402X, Oliver, JL ORCID: 0000-0002-0713-6627, Petridis, A ORCID: 0000-0002-9716-1243, Qureshi, A, Sharma, AS ORCID: 0000-0003-2250-4181, White, MJ ORCID: 0000-0001-5474-4580, Cairo, VMM ORCID: 0000-0002-0758-7575, Jain, V ORCID: 0000-0002-0214-5292, Swift, SP, Gingrich, DM ORCID: 0000-0002-2552-1449
et al (show 90 more authors) (2023) Measurement of the inclusive Formula Presented production cross section in the lepton+jets channel in pp collisions at Formula Presented with the ATLAS detector using support vector machines Physical Review D, 108 (3). 032014-. ISSN 2470-0010, 2470-0029

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Abstract

A measurement of the top quark pair-production cross section in the lepton + jets decay channel is presented. It is based on 4.6 fb - 1 of s = 7 TeV p p collision data collected during 2011 by the ATLAS experiment at the CERN Large Hadron Collider. A three-class, multidimensional event classifier based on support vector machines is used to differentiate t t ¯ events from backgrounds. The t t ¯ production cross section is found to be σ t t ¯ = 168.5 ± 0.7 ( stat ) - 5.9 + 6.2 ( syst ) - 3.2 + 3.4 ( lumi ) pb . The result is consistent with the Standard Model prediction based on QCD calculations at next-to-next-to-leading order.

Item Type: Article
Uncontrolled Keywords: 5106 Nuclear and Plasma Physics, 5107 Particle and High Energy Physics, 51 Physical Sciences
Divisions: Faculty of Science & Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 29 Aug 2023 08:18
Last Modified: 22 Jan 2026 08:39
DOI: 10.1103/PhysRevD.108.032014
Open Access URL: https://journals.aps.org/prd/abstract/10.1103/Phys...
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3172365
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