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 - INSPIRE

DataBETA

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

ATLAS

Collaboration

Sep 6, 2016

22 pages

Published in:

Eur.Phys.J.C 77 (2017) 1, 40

Published: Jan 20, 2017

e-Print:

1609.01599 [hep-ex]

DOI:

10.1140/epjc/s10052-016-4574-y

Report number:

CERN-EP-2016-185

Experiments:

CERN-LHC-ATLAS

View in:

reference search119 citations

Citations per year

Abstract: (Springer)

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.

Note:

25 pages, plus author list - 42 pages in total, 8 figures, 5 tables. Published in Eur. Phys. J. C. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2015-22/

p p: colliding beams
top: pair production
vector boson: associated production
Z0: associated production
W: associated production
p p: scattering
Z0: leptonic decay
W: leptonic decay
ATLAS
CERN LHC Coll

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