Top Quark Forward-Backward Asymmetry

Details Top Quark Forward-Backward Asymmetry Top Quark Forward-Backward Asymmetry

2009-08-18

arxiv.org/abs/0908.2589v2

Phys.Lett.B682:287-290,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 3 figures, revtex4, match the published version

Scientific paper

10.1016/j.physletb.2009.11.015

The recent forward-backward asymmetry recorded by the CDF Collaboration for the top and anti-top quark pair production indicates more than $2\sigma$ deviation from the Standard Model prediction, while its total production cross section remains consistent. We propose a $W'$ boson that couples to down and top quarks. We identify the parameter space that can give rise a large enough forward-backward asymmetry without producing too many top and anti-top quark pairs. Other models presented erstwhile in the literature that can produce such effects are also discussed.

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