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Measurement of the t(t)over-barZ and t(t)over-barW production cross sections in multilepton final states using 3.2 fb(-1) of pp collisions at root s=13 TeV with the ATLAS detector
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0002-8913-0981
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Number of Authors: 2861
2017 (English)In: European Physical Journal C, ISSN 1434-6044, E-ISSN 1434-6052, Vol. 77, no 1, 40Article in journal (Refereed) Published
Abstract [en]

A measurement of the t (t) over barZ and t (t) over barW 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 root 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 sigma(t (t) over barZ) = 0.9 +/- 0.3 pb and sigma(t (t) over barW) = 1.5 +/- 0.8 pb, in agreement with the Standard Model predictions.

Place, publisher, year, edition, pages
Springer, 2017. Vol. 77, no 1, 40
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Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-204417DOI: 10.1140/epjc/s10052-016-4574-yISI: 000393665500001PubMedID: 28260981ScopusID: 2-s2.0-85011866957OAI: oai:DiVA.org:kth-204417DiVA: diva2:1084469
Note

QC 20170324

Available from: 2017-03-24 Created: 2017-03-24 Last updated: 2017-03-24Bibliographically approved

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Lund-Jensen, BengtSidebo, P. EdvinStrandberg, Jonas
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