Simple models for the top asymmetry: constraints and predictions

Details Simple models for the top asymmetry: constraints and predictions Simple models for the top asymmetry: constraints and predictions

2011-07-05

arxiv.org/abs/1107.0841v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX 27 pages. Version to appear in JHEP

Scientific paper

We perform a comprehensive study of the allowed range for the Tevatron t tbar forward-backward asymmetries in six representative new physics models: a flavour-changing Z' boson, a scalar isodoublet, a W' boson, a heavy axigluon, a colour-triplet and a colour-sextet scalar. We devote special attention to the constraints from the t tbar tail at LHC on the parameter space, which will be dramatic if the measurements agree with the SM prediction, specially for Z' and W' bosons. We also study the predictions for the charge asymmetries at LHC and compare several proposed definitions.

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