A search for t¯t resonances with the ATLAS detector in 2.05 fb<sup>-1</sup> of proton-proton collisions at √s = 7 TeV

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<sup>−1</sup>, which was recor...

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Detalles Bibliográficos
Autores principales: Anduaga, Xabier Sebastián, Dova, María Teresa, Monticelli, Fernando Gabriel, Tripiana, Martín F., The ATLAS Collaboration
Formato: Articulo
Lenguaje:Inglés
Publicado: 2012
Materias:
Ciencias Exactas
Física
top quark
Partículas Elementales
z boson
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/80000
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-80000
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Exactas
Física
top quark
Partículas Elementales
z boson
spellingShingle Ciencias Exactas
Física
top quark
Partículas Elementales
z boson
Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín F.
The ATLAS Collaboration
A search for t¯t resonances with the ATLAS detector in 2.05 fb<sup>-1</sup> of proton-proton collisions at √s = 7 TeV
topic_facet Ciencias Exactas
Física
top quark
Partículas Elementales
z boson
description 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<sup>−1</sup>, 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 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<sub>Z′</sub>=500 GeV to m<sub>Z′</sub>=1300 GeV. The corresponding excluded mass region for a leptophobic topcolour Z′ boson (Kaluza-Klein gluon excitation in the Randall-Sundrum model) is m<sub>Z′</sub><880 GeV ( m<sub>gKK</sub><1130 GeV ).
format Articulo
Articulo
author Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín F.
The ATLAS Collaboration
author_facet Anduaga, Xabier Sebastián
Dova, María Teresa
Monticelli, Fernando Gabriel
Tripiana, Martín F.
The ATLAS Collaboration
author_sort Anduaga, Xabier Sebastián
title A search for t¯t resonances with the ATLAS detector in 2.05 fb<sup>-1</sup> of proton-proton collisions at √s = 7 TeV
title_short A search for t¯t resonances with the ATLAS detector in 2.05 fb<sup>-1</sup> of proton-proton collisions at √s = 7 TeV
title_full A search for t¯t resonances with the ATLAS detector in 2.05 fb<sup>-1</sup> of proton-proton collisions at √s = 7 TeV
title_fullStr A search for t¯t resonances with the ATLAS detector in 2.05 fb<sup>-1</sup> of proton-proton collisions at √s = 7 TeV
title_full_unstemmed A search for t¯t resonances with the ATLAS detector in 2.05 fb<sup>-1</sup> of proton-proton collisions at √s = 7 TeV
title_sort search for t¯t resonances with the atlas detector in 2.05 fb<sup>-1</sup> of proton-proton collisions at √s = 7 tev
publishDate 2012
url http://sedici.unlp.edu.ar/handle/10915/80000
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