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Constraining heavy colored resonances from top-antitop quark events

2009; American Physical Society; Volume: 80; Issue: 5 Linguagem: Inglês

10.1103/physrevd.80.051701

1550-7998

P. Ferrario, Germán Rodrigo,

Black Holes and Theoretical Physics

Recent measurements of the top quark charge asymmetry at Tevatron disfavor the existence of flavor universal axigluons and colorons at $2\ensuremath{\sigma}$. In this letter, we explore the possibility of reconciling the data with these models and use the charge asymmetry and the invariant mass distribution of top-antitop quark pair events to constrain the mass and couplings of massive color-octet gauge bosons decaying to top quarks.