@Article{ATLASCollaborationAad_etal2015,
author="ATLAS Collaboration (Aad, G. et al
and Alvarez Piqueras, D.
and Cabrera Urban, S.
and Castillo Gimenez, V.
and Costa, M. J.
and Fernandez Martinez, P.
and Ferrer, A.
and Fiorini, L.
and Fuster, J.
and Garcia, C.
and Garcia Navarro, J. E.
and Gonzalez de la Hoz, S.
and Hernandez Jimenez, Y.
and Higon-Rodriguez, E.
and Irles Quiles, A.
and Jimenez Pena, J.
and Kaci, M.
and King, M.
and Lacasta, C.
and Lacuesta, V. R.
and Marti-Garcia, S.
and Mitsou, V. A.
and Pedraza Lopez, S.
and Perez Garcia-Esta{\~A}{\textpm}, M. T.
and Romero Adam, E.
and Ros, E.
and Salt, J.
and Sanchez Martinez, V.
and Soldevila, U.
and Sanchez, J.
and Valero, A.
and Valls Ferrer, J. A.
and Vos, M.",
title="Measurement of the t(t)over-barW and t(t)over-barZ production cross sections in pp collisions at root s=8 TeV with the ATLAS detector",
journal="Journal of High Energy Physics",
year="2015",
publisher="Springer",
volume="11",
number="11",
pages="172--48pp",
optkeywords="Electroweak interaction; Hadron-Hadron scattering; Top physics",
abstract="The production cross sections of top-quark pairs in association with massive vector bosons have been measured using data from pp collisions at root s = 8 TeV. The dataset corresponds to an integrated luminosity of 20.3 fb(-1) collected by the ATLAS detector in 2012 at the LHC. Final states with two, three or four leptons are considered. A fit to the data considering the t (t) over barW and t (t) over barZ processes simultaneously yields a significance of 5.0 sigma (4.2 sigma) over the background-only hypothesis for t (t) over barW (t (t) over barZ) production. The measured cross sections are sigma(t (t) over barW) = 369(-91)(+100) fb and sigma(t (t) over barZ) = 176(-52)(+58) fb. The background-only hypothesis with neither t (t) over barW nor t (t) over barZ production is excluded at 7.1 sigma. All measurements are consistent with next-to-leading-order calculations for the t (t) over barW and t (t) over barZ processes.",
optnote="WOS:000366139900001",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=2488), last updated on Fri, 01 Jan 2016 20:30:36 +0000",
issn="1029-8479",
doi="10.1007/JHEP11(2015)172",
opturl="http://arxiv.org/abs/1509.05276",
opturl="https://doi.org/10.1007/JHEP11(2015)172",
archivePrefix="arXiv",
eprint="1509.05276",
language="English"
}