@Article{ATLASCollaborationAad_etal2013,
author="ATLAS Collaboration (Aad, G. et al
and Cabrera Urban, S.
and Castillo Gimenez, V.
and Costa, M. J.
and Fassi, F.
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 Kaci, M.
and Lacasta, C.
and Lacuesta, V. R.
and March, L.
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 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 Solans, C. A.
and Soldevila, U.
and Sanchez, J.
and Torro Pastor, E.
and Valero, A.
and Valladolid Gallego, E.
and Valls Ferrer, J. A.
and Villaplana Perez, M.
and Vos, M.",
title="Search for pair production of heavy top-like quarks decaying to a high-p(T) W boson and a b quark in the lepton plus jets final state at root s=7 TeV with the ATLAS detector",
journal="Physics Letters B",
year="2013",
publisher="Elsevier Science Bv",
volume="718",
number="4-5",
pages="1284--1302",
abstract="A search is presented for production of a heavy up-type quark (t{\textquoteright}) together with its antiparticle, assuming a significant branching ratio for subsequent decay into a W boson and a b quark. The search is based on 4.7 fb(-1) of pp collisions root s = 7 TeV recorded in 2011 with the ATLAS detector at the CERN Large Hadron Collider. Data are analyzed in the lepton + jets final state, characterized by a high-transverse-momentum isolated electron or muon, large missing transverse momentum and at least three jets. The analysis strategy relies on the substantial boost of the W bosons in the t{\textquoteright}(t{\textquoteright}) over bar signal when m(t{\textquoteright}) greater than or similar to 400 GeV. No significant excess of events above the Standard Model expectation is observed and the result of the search is interpreted in the context of fourth-generation and vector-like quark models. Under the assumption of a branching ratio BR(t{\textquoteright} -> W b) = I, a fourth-generation t{\textquoteright} quark with mass lower than 656 GeV is excluded at 95{\%} confidence level. In addition, in light of the recent discovery of a new boson of mass similar to 126 GeV at the LHC, upper limits are derived in the two-dimensional plane of BR(t{\textquoteright} -> Wb) versus BR(t{\textquoteright} -> Ht), where H is the Standard Model Higgs boson, for vector-like quarks of various masses.",
optnote="WOS:000314554300014",
optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=1387), last updated on Thu, 25 Apr 2013 11:09:53 +0000",
issn="0370-2693",
doi="10.1016/j.physletb.2012.11.071",
opturl="http://arxiv.org/abs/1210.5468",
opturl="https://doi.org/10.1016/j.physletb.2012.11.071",
archivePrefix="arXiv",
eprint="1210.5468",
language="English"
}