Volume 276 - Fourth Annual Large Hadron Collider Physics (LHCP2016) - Poster: Top Quark physics
Measurement of the ttZ cross section in the four lepton channel at 13 TeV with ATLAS
A. Schulte*  on behalf of the ATLAS Collaboration
*: corresponding author
Full text: pdf
Pre-published on: October 26, 2016
Published on: March 28, 2017
Abstract
The measurement of a Z boson together with a top quark pair in the four lepton channel is presented. The analysis uses the first data at $\sqrt{s}=$13 TeV collected by the ATLAS detector at the Large Hadron Collider in the year 2015.
The data sample corresponds to 3.2 fb$^{-1}$ of integrated luminosity.
The inclusive t\={t}Z cross section is extracted using a likelihood fit to signal and control regions in the three and four lepton channel, resulting in $\sigma _{\textit{t\={t}Z}} = 0.92 \pm 0.30 \mathrm{(stat.)} \pm 0.11 \mathrm{(syst.) pb}.$
DOI: https://doi.org/10.22323/1.276.0238
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