Constraining heavy colored resonances from top-antitop quark events

15 September 2009

journal article
research article
Published by American Physical Society (APS) in Physical Review D

Vol. 80 (5) , 051701
https://doi.org/10.1103/physrevd.80.051701

Abstract

Recent measurements of the top quark charge asymmetry at Tevatron disfavor the existence of flavor universal axigluons and colorons at

2 σ

. 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.

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