Asymmetric Left-Right Model and the Top Pair Forward-Backward Asymmetry

Details Asymmetric Left-Right Model and the Top Pair Forward-Backward Asymmetry Asymmetric Left-Right Model and the Top Pair Forward-Backward Asymmetry

2010-02-04

arxiv.org/abs/1002.1048v4

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 6 figures; version published in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.81.113009

The forward-backward asymmetry measurement in top-pair production at the Tevatron is about $2\sigma$ from the Standard Model prediction. We propose an asymmetric left-right model, which includes a $W'$ boson with a right-handed coupling of down to top quark, and a $Z'$ boson with diagonal couplings to the up, top, and down quarks with $M_{W'}\approx175$ GeV and $M_{Z'}\approx 900$ GeV. The model accounts for the asymmetry while remaining consistent with the top-pair total cross-section and invariant mass distribution.

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