Scientific article
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Measurement of the tt¯Z and tt¯W production cross sections in multilepton final states using 3.2 fb -1 of pp collisions at √s = 13 TeV with the ATLAS detector

ContributorsATLAS Collaboration
Collection
  • Open Access - SCOAP3
Publication date2017
Abstract

A measurement of the tt¯Z and tt¯W 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 σtt¯Z=0.9±0.3 pb and σtt¯W=1.5±0.8 pb, in agreement with the Standard Model predictions.

Citation (ISO format)
ATLAS Collaboration. Measurement of the tt¯Z and tt¯W production cross sections in multilepton final states using 3.2 fb -1 of pp collisions at √s = 13 TeV with the ATLAS detector. In: European physical journal. C, Particles and fields, 2017, vol. 77, n° 1, p. 40. doi: 10.1140/epjc/s10052-016-4574-y
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Article (Published version)
Identifiers
Journal ISSN1434-6044
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Creation02/02/2017 15:50:20
First validation02/02/2017 15:50:20
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