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
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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

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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

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dc.contributor.author ATLAS Collaboration
dc.contributor.author Mitsou, Vasiliki
dc.contributor.author Fuster Verdú, Juan A.
dc.contributor.author Ferrer Soria, Antonio
dc.contributor.author Cabrera Urbán, Susana
dc.contributor.author García García, Carmen
dc.contributor.author Castillo Giménez, María Victoria
dc.contributor.author Higón Rodríguez, Emilio
dc.contributor.author Martí García, Salvador
dc.contributor.author Ros Martínez, Eduardo
dc.contributor.author González de la Hoz, Santiago
dc.contributor.author Salt Cairols, José
dc.contributor.author Valls Ferrer, Juan Antonio
dc.contributor.author Kaci, Mohammed
dc.contributor.author Fiorini, Luca
dc.contributor.author Hernández Jiménez, Yesenia
dc.contributor.author Lacasta Llácer, Carlos
dc.contributor.author Villaplana Pérez, Miguel
dc.date.accessioned 2014-07-04T12:02:58Z
dc.date.available 2014-07-04T12:02:58Z
dc.date.issued 2012
dc.identifier.uri http://hdl.handle.net/10550/36965
dc.description.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' 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') = 500 GeV to m(Z') = 1300 GeV. The corresponding excluded mass region for a leptophobic topcolour Z' boson (Kaluza-Klein gluon excitation in the Randall-Sundrum model) is m(Z') < 880 GeV (m(gKK) < 1130 GeV).
dc.language.iso eng
dc.relation.ispartof European Physical Journal C, 2012, vol. 72, num. 07-2083, p. 1-23
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source ATLAS Collaboration Mitsou, Vasiliki Fuster Verdú, Juan A. Ferrer Soria, Antonio Cabrera Urbán, Susana García García, Carmen Castillo Giménez, María Victoria Higón Rodríguez, Emilio Martí García, Salvador Ros Martínez, Eduardo González de la Hoz, Santiago Salt Cairols, José Valls Ferrer, Juan Antonio Kaci, Mohamed Fiorini, Luca Hernández Jiménez, Yesenia Lacasta Llácer, Carlos Villaplana Pérez, Miguel 2012 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 European Physical Journal C 72 07-2083 1 23
dc.subject Física nuclear
dc.subject Partícules (Física nuclear)
dc.subject Acceleradors de partícules
dc.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
dc.type info:eu-repo/semantics/article
dc.date.updated 2014-07-04T12:02:58Z
dc.identifier.doi http://dx.doi.org/10.1140/epjc/s10052-012-2083-1
dc.identifier.idgrec 083396

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