A search for tt̄ resonances in lepton+jets events with highly boosted top quarks collected in pp collisions at √s = 7TeV with the ATLAS detector
Entity
UAM. Departamento de Física TeóricaPublisher
Springer Verlag; SISSA 2012Date
2012-09-13Citation
10.1007/JHEP09(2012)041
Journal of High Energy Physics 2012.9 (2012): 041
ISSN
1126-6708 (print); 1029-8479 (online)DOI
10.1007/JHEP09(2012)041Editor's Version
http://dx.doi.org/10.1007/JHEP09(2012)041Subjects
Hadron-hadron scattering; FísicaNote
Journal of High Energy Physics 2012.9 (2012): 041 reproduced by permission of Scuola Internazionale Superiore di Studi Avanzati (SISSA)Artículo escrito por un elevado número de autores, solo se referencian el que aparece en primer lugar, el nombre del grupo de colaboración, si le hubiere, y los autores pertenecientes a la UAM
Rights
© SISSA 2012Abstract
A search for resonant production of high-mass top-quark pairs is performed on 2.05 fb-1 of proton-proton collisions at √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 tt̄ invariant mass spectrum is found to be compatible with the Standard Model prediction and 95% credibility level upper limits are derived on the tt̄ 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
Files in this item
Google Scholar:ATLAS Collaboration
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Aad, G.
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Arnal, V.
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Barreiro Alonso, Fernando
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Cantero, J.
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de la Torre, H.
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Peso Malagón, José del
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Glasman Kuguel, Claudia Beatriz
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Labarga Echeverría, Luis Alfonso
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Lagouri, T.
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Llorente Merino, J.
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March, Luis
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Terrón Cuadrado, Juan
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