@Article{ATLASCollaborationAad_etal2012,
author="ATLAS Collaboration (Aad, G. et al
and Amoros, G.
and Cabrera Urban, S.
and Castillo Gimenez, V.
and Costa, M. J.
and Ferrer, A.
and Fiorini, L.
and Fuster, J.
and Garcia, C.
and Gonzalez de la Hoz, S.
and Hernandez Jimenez, Y.
and Higon-Rodriguez, E.
and Irles Quiles, A.
and Kaci, M.
and Lacasta, C.
and Lacuesta, V. R.
and Marti-Garcia, S.
and Mi{\~A}{\textpm}ano, M.
and Mitsou, V. A.
and Moles-Valls, R.
and Moreno Llacer, M.
and Oliver Garcia, E.
and Perez Garcia-Esta{\~A}{\textpm}, M. T.
and Ros, E.
and Salt, J.
and Solans, C. A.
and Soldevila, U.
and Sanchez, J.
and Torro Pastor, E.
and Valladolid Gallego, E.
and Valls Ferrer, J. A.
and Villaplana Perez, M.
and Vos, M.
and Wildauer, A.",
title="Search for New Phenomena in t(t)overbar Events with Large Missing Transverse Momentum in Proton-Proton Collisions at root s=7 TeV with the ATLAS Detector",
journal="Physical Review Letters",
year="2012",
publisher="Amer Physical Soc",
volume="108",
number="4",
pages="041805--18pp",
abstract="A search for new phenomena in t (t) over bar events with large missing transverse momentum in proton-proton collisions at a center-of-mass energy of 7 TeV is presented. The measurement is based on 1: 04 fb(-1) of data collected with the ATLAS detector at the LHC. Contributions to this final state may arise from a number of standard model extensions. The results are interpreted in terms of a model where new top-quark partners are pair produced and each decay to an on-shell top (or antitop) quark and a long-lived undetected neutral particle. The data are found to be consistent with standard model expectations. A limit at 95{\%} confidence level is set excluding a cross section times branching ratio of 1.1 pb for a top-partner mass of 420 GeVand a neutral particle mass less than 10 GeV. In a model of exotic fourth generation quarks, toppartner masses are excluded up to 420 GeV and neutral particle masses up to 140 GeV.",
optnote="WOS:000299828100003",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=897), last updated on Thu, 01 Mar 2012 11:32:36 +0000",
issn="0031-9007",
doi="10.1103/PhysRevLett.108.041805",
opturl="http://arxiv.org/abs/1109.4725",
opturl="https://doi.org/10.1103/PhysRevLett.108.041805",
archivePrefix="arXiv",
eprint="1109.4725",
language="English"
}