@Article{ATLASCollaborationAad_etal2012, author="ATLAS Collaboration (Aad, G. et al 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 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 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 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 Valladolid Gallego, E. and Valls Ferrer, J. A. and Villaplana Perez, M. and Vos, M. and Wildauer, A.", title="A search for t (t)over-bar resonances with the ATLAS detector in 2.05 fb(-1) of proton-proton collisions at root s=7 TeV", journal="European Physical Journal C", year="2012", publisher="Springer", volume="72", number="7", pages="2083--23pp", abstract="A search for top quark pair resonances in final states containing at least one electron or muon has been performed with the ATLAS experiment at the CERN Large Hadron Collider. The search uses a data sample corresponding to an integrated luminosity of 2.05 fb(-1), which was recorded in 2011 at a proton-proton centre-of-mass energy of 7 TeV. No evidence for a resonance is found and limits are set on the production cross-section times branching ratio to t (t) over bar for narrow and wide resonances. For narrow Z{\textquoteright} bosons, the observed 95 {\%} Bayesian credibility level limits range from 9.3 pb to 0.95 pb for masses in the range of m(Z{\textquoteright}) = 500 GeV to m(Z{\textquoteright}) = 1300 GeV. The corresponding excluded mass region for a leptophobic topcolour Z{\textquoteright} boson (Kaluza-Klein gluon excitation in the Randall-Sundrum model) is m(Z{\textquoteright}) < 880 GeV (m(gKK) < 1130 GeV).", optnote="WOS:000307269400029", optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=1132), last updated on Tue, 25 Sep 2012 11:13:40 +0000", issn="1434-6044", doi="10.1140/epjc/s10052-012-2083-1", opturl="http://arxiv.org/abs/1205.5371", opturl="https://doi.org/10.1140/epjc/s10052-012-2083-1", archivePrefix="arXiv", eprint="1205.5371", language="English" }