@Article{ATLASCollaborationAad_etal2016,
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 Oliver Garcia, E.
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 Valladolid Gallego, E.
and Valls Ferrer, J. A.
and Vos, M.",
title="Search for single top-quark production via flavour-changing neutral currents at 8TeV with the ATLAS detector",
journal="European Physical Journal C",
year="2016",
publisher="Springer",
volume="76",
number="2",
pages="55 - 30pp",
abstract="A search for single top-quark production via flavour-changing neutral current processes from gluon plus up- or charm-quark initial states in proton-proton collisions at the LHC is presented. Data collected with the ATLAS detector in 2012 at a centre-of-mass energy of 8TeV and corresponding to an integrated luminosity of 20.3 fb(-1) are used. Candidate events for a top quark decaying into a lepton, a neutrino and a jet are selected and classified into signal- and background-like candidates using a neural network. No signal is observed and an upper limit on the production cross-section multiplied by the t -> Wb branching fraction is set. The observed 95{\%} CL limit is sigma(qg -> t) x B(t -> Wb) < 3.4 pb and the expected 95{\%} CL limit is sigma(qg -> t) x B(t -> Wb) < 2.9 pb. The observed limit can be interpreted as upper limits on the coupling constants of the flavour-changing neutral current interactions divided by the scale of new physics kappa(ugt)/Lambda < 5.8 x 10(-3) TeV-1 and kappa(cgt)/Lambda < 13x10(-3) TeV and on the branching fractions B(t -> ug) < 4.0 x 10(-5) and B(t -> cg) < 20 x 10(-5).",
optnote="WOS:000375277900001",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=2663), last updated on Thu, 28 Jul 2016 12:05:14 +0000",
issn="1434-6044",
doi="10.1140/epjc/s10052-016-3876-4",
opturl="http://arxiv.org/abs/1509.00294",
opturl="https://doi.org/10.1140/epjc/s10052-016-3876-4",
archivePrefix="arXiv",
eprint="1509.00294",
language="English"
}