Mañana, JUEVES, 24 DE ABRIL, el sistema se apagará debido a tareas habituales de mantenimiento a partir de las 9 de la mañana. Lamentamos las molestias.
Search for resonant t̄t production in lepton+jets events in pp collisions at √s=7 TeV
Entity
UAM. Departamento de Física TeóricaPublisher
Springer Verlag; SISSA 2012Date
2012-12-04Citation
10.1007/JHEP12(2012)015
Journal of High Energy Physics 2012.12 (2012): 015
ISSN
1029-8479 (online); 1126-6708 (print)DOI
10.1007/JHEP12(2012)015Editor's Version
http://dx.doi.org/10.1007/JHEP12(2012)015Subjects
Hadron-hadron scattering; FísicaNote
Journal of High Energy Physics 2012.12 (2012): 015 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 2012; © 2012 CERN for the benefit of the CMS collaborationAbstract
A model-independent search for the production of heavy resonances decaying into top-antitop quark pairs is presented. The search is based on events containing one lepton (muon or electron) and at least two jets selected from data samples corresponding to an integrated luminosity of 4.4-5.0 fb -1 collected in pp collisions at √s =7 TeV. Results are presented from the combination of two dedicated searches optimized for boosted production and production at threshold. No excess of events is observed over the expected yield from the standard model processes. Topcolor Z′ bosons with narrow (wide) width are excluded at 95% confidence level for masses below 1.49 (2.04) TeV and an upper limit of 0.3 (1.3) pb or lower is set on the production cross section times branching fraction for resonance masses above 1 TeV. Kaluza-Klein excitations of a gluon with masses below 1.82 TeV (at 95% confidence level) in the Randall-Sundrum model are also excluded, and an upper limit of 0.7 pb or lower is set on the production cross section times branching fraction for resonance masses above 1 TeV
Files in this item
Google Scholar:The CMS collaboration
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Chatrchyan, S.
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Albajar Molera, Carmen
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Codispoti, G.
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Fernández Trocóniz Acha, Jorge
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