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    Search for resonant production of tt̅ decaying to jets in pp̅ collisions at √s=1.96  TeV

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    URI: http://hdl.handle.net/10902/2261
    DOI: 10.1103/PhysRevD.84.072003
    ISSN: 1550-7998
    ISSN: 1550-2368
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    Author
    Aaltonen, Timo Antero; Álvarez González, Bárbara; Casal Laraña, Bruno; Cuevas Maestro, Francisco Javier; Gómez Gramuglio, Gervasio; Palencia Cortezón, José Enrique; Rodrigo Anoro, TeresaAutoridad Unican; Ruiz Jimeno, AlbertoAutoridad Unican; Scodellaro, Luca; Vila Alvarez, Ivan; Vilar Cortabitarte, RocíoAutoridad Unican; Vizán García, Jesús ManuelAutoridad Unican
    Date
    2011-10-11
    Derechos
    © 2011 American Physical Society
    Publicado en
    Physical Review D - Particles, Fields, Gravitation and Cosmology, 2011, 84(7), 072003
    Publisher
    American Physical Society
    Enlace a la publicación
    https://doi.org/10.1103/PhysRevD.84.072003
    Abstract:
    This paper reports a search for nonstandard model topquark resonances, Z′, decaying to tt̅ →W+bW-b̅ , where both W decay to quarks. We examine the top-antitop quark invariant mass spectrum for the presence of narrow resonant states. The search uses a data sample of pp̅ collisions at a center of mass energy of 1.96 TeV collected by the CDF II detector at the Fermilab Tevatron, with an integrated luminosity of 2.8  fb-1. No evidence for top-antitop quark resonant production is found. We place upper limits on the production cross section times branching ratio for a specific topcolor assisted technicolor model in which the Z′ has a width of ΓZ′=0.012MZ′. Within this model, we exclude a Z′ boson with masses below 805  GeV/c2 at the 95% confidence level.
    Collections to which it belong
    • D15 Artículos [447]
    • D52 Artículos [713]

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    UNIVERSIDAD DE CANTABRIA

    Repositorio realizado por la Biblioteca Universitaria utilizando DSpace software
    Contact Us | Send Feedback
    Metadatos sujetos a:licencia de Creative Commons Reconocimiento 3.0 España