@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 Valero, A. 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 in lepton plus jets events with highly boosted top quarks collected in pp collisions at root s=7 TeV with the ATLAS detector", journal="Journal of High Energy Physics", year="2012", publisher="Springer", volume="09", number="9", pages="041--45pp", optkeywords="Hadron-Hadron Scattering", abstract="A search for resonant production of high-mass top-quark pairs is performed on 2.05 fb(-1) of proton-proton collisions at root s = 7 TeV collected in 2011 with the ATLAS experiment at the Large Hadron Collider. This analysis of the lepton+jets final state is specifically designed for the particular topology that arises from the decay of highly boosted top quarks. The observed t (t) over bar invariant mass spectrum is found to be compatible with the Standard Model prediction and 95{\%} credibility level upper limits are derived on the t (t) over bar production rate through new massive states. An upper limit of 0.7 pb is set on the production cross section times branching fraction of a narrow 1 TeV resonance. A Kaluza-Klein gluon with a mass smaller than 1.5 TeV is excluded.", optnote="WOS:000310341300030", optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=1260), last updated on Fri, 28 Dec 2012 00:29:50 +0000", issn="1126-6708", doi="10.1007/JHEP09(2012)041", opturl="http://arxiv.org/abs/arXiv:1207.2409", opturl="https://doi.org/10.1007/JHEP09(2012)041", archivePrefix="arXiv", eprint="arXiv:1207.2409", language="English" }