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
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 √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 σt\={t}Z=0.92±0.30(stat.)±0.11(syst.)pb.
DOI: https://doi.org/10.22323/1.276.0238
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