Constraining heavy colored resonances from top-antitop quark events

Details Constraining heavy colored resonances from top-antitop quark events Constraining heavy colored resonances from top-antitop quark events

2009-06-30

arxiv.org/abs/0906.5541v2

Phys.Rev.D80:051701,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 4 figures. References added, final version to appear in Phys.Rev.D

Scientific paper

10.1103/PhysRevD.80.051701

Recent measurements of the top quark charge asymmetry at Tevatron disfavor the existence of flavor universal axigluons and colorons at 2 sigmas. In this letter we explore the possibility to reconcile 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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