Allbrooke, B M M, Asquith, L, Cerri, A, Chavez Barajas, C A, De Santo, A, Salvatore, F, Santoyo Castillo, I, Suruliz, K, Sutton, M R, Vivarelli, I and The ATLAS Collaboration, (2017) Measurement of the tt̄W and tt̄Z production cross sections in multilepton final states using 3.2 fb−¹ of pp collisions at s√ = 13 TeV with the ATLAS detector. European Physical Journal C: Particles and Fields, 77 (1). a40 1-29. ISSN 1434-6044
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Abstract
A measurement of the tt̄Z and tt̄W production cross sections in final states with either two same-charge muons, or three or four leptons (electrons or muons) is presented. The analysis uses a data sample of proton-proton collisions at s √ =13 TeV recorded with the ATLAS detector at the Large Hadron Collider in 2015, corresponding to a total integrated luminosity of 3.2 fb −1 . The inclusive cross sections are extracted using likelihood fits to signal and control regions, resulting in σ tt̄Z =0.9±0.3 pb and σ tt̄W =1.5±0.8 pb, in agreement with the Standard Model predictions.
Item Type: | Article |
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Schools and Departments: | School of Mathematical and Physical Sciences > Physics and Astronomy |
Research Centres and Groups: | Experimental Particle Physics Research Group |
Subjects: | Q Science > QC Physics |
Depositing User: | Richard Chambers |
Date Deposited: | 20 Jan 2017 15:19 |
Last Modified: | 13 Aug 2020 09:45 |
URI: | http://sro.sussex.ac.uk/id/eprint/66370 |
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📧 Request an updateProject Name | Sussex Project Number | Funder | Funder Ref |
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STFC Consolidated Grant Supplement | G1316 | STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL | ST/M000753/1 |