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
- Autores
- Anduaga, Xabier Sebastián; Dova, María Teresa; Monticelli, Fernando Gabriel; Tripiana, Martín F.; The ATLAS Collaboration
- Año de publicación
- 2012
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- 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 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 mZ′=500 GeV to mZ′=1300 GeV. The corresponding excluded mass region for a leptophobic topcolour Z′ boson (Kaluza-Klein gluon excitation in the Randall-Sundrum model) is mZ′<880 GeV ( mgKK<1130 GeV ).
Facultad de Ciencias Exactas - Materia
-
Ciencias Exactas
Física
top quark
Partículas Elementales
z boson - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by/4.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/80000
Ver los metadatos del registro completo
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A search for t¯t resonances with the ATLAS detector in 2.05 fb<sup>-1</sup> of proton-proton collisions at √s = 7 TeVAnduaga, Xabier SebastiánDova, María TeresaMonticelli, Fernando GabrielTripiana, Martín F.The ATLAS CollaborationCiencias ExactasFísicatop quarkPartículas Elementalesz bosonA 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 ).Facultad de Ciencias Exactas2012-07-26info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/80000enginfo:eu-repo/semantics/altIdentifier/issn/1434-6052info:eu-repo/semantics/altIdentifier/doi/10.1140/epjc/s10052-012-2083-1info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-15T11:03:55Zoai:sedici.unlp.edu.ar:10915/80000Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-15 11:03:55.866SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
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 |
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 |
| spellingShingle |
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 Anduaga, Xabier Sebastián Ciencias Exactas Física top quark Partículas Elementales z boson |
| 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 |
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 |
| dc.creator.none.fl_str_mv |
Anduaga, Xabier Sebastián Dova, María Teresa Monticelli, Fernando Gabriel Tripiana, Martín F. The ATLAS Collaboration |
| author |
Anduaga, Xabier Sebastián |
| author_facet |
Anduaga, Xabier Sebastián Dova, María Teresa Monticelli, Fernando Gabriel Tripiana, Martín F. The ATLAS Collaboration |
| author_role |
author |
| author2 |
Dova, María Teresa Monticelli, Fernando Gabriel Tripiana, Martín F. The ATLAS Collaboration |
| author2_role |
author author author author |
| dc.subject.none.fl_str_mv |
Ciencias Exactas Física top quark Partículas Elementales z boson |
| topic |
Ciencias Exactas Física top quark Partículas Elementales z boson |
| dc.description.none.fl_txt_mv |
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 ). Facultad de Ciencias Exactas |
| 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 ). |
| publishDate |
2012 |
| dc.date.none.fl_str_mv |
2012-07-26 |
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info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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eng |
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info:eu-repo/semantics/altIdentifier/issn/1434-6052 info:eu-repo/semantics/altIdentifier/doi/10.1140/epjc/s10052-012-2083-1 |
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