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Measurement of the tbar{t}Z and tbar{t}W production cross sections in multilepton final states using 3.2 fb⁻¹ of pp collisions at sqrt{s} = 13 TeV with the ATLAS detector
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Measurement of the $t\bar{t}Z$ and $t\bar{t}W$ production cross sections in multilepton final states using 3.2 fb$^{-1}$ of $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
abstract
A measurement of the $t\bar{t}Z$ and $t\bar{t}W$ 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 $\sqrt{s} = 13$ 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 $\sigma_{t\bar{t}Z} = 0.9 \pm 0.3$ pb and $\sigma_{t\bar{t}W} = 1.5 \pm 0.8$ pb, in agreement with the Standard Model predictions.
Forward citations
Cited by 1 Pith paper
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A search for electroweak $t\bar{t}Wj$ production in multileptonic final states at $\sqrt{s} = 13$ TeV with the ATLAS detector and bounds on effective field theory operators
First search for electroweak ttWj production at 13 TeV sets observed (expected) 95% CL upper limits of 251 fb (230 fb) versus the SM prediction of 47.7 fb and constrains the O_Ht and O_HQ^(1) EFT operators.
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