Top Quark Interactions and the Search for New Physics
Abstract
We give a complete set of 19 independent effective dimension 5 interactions involving the top and bottom quarks with the electroweak gauge bosons within the context of the chiral Lagrangian. The anomalous operators contribute to the leading energy power E3 of the VL VL -> t t or t b amplitudes. We also show the top quark production rates at the LHC and the LC via VL VL fusion processes. If no anomalous production rate is found, then these coefficients can be bound (based on the naive dimensional analysis) to be of order 10-2 or 10-1. This is about an order of magnitude more stringent than the bounds for the next-to-leading order bosonic operators commonly studied in VL VL -> VL VL scatterings. The effect on a CP-odd observable is also briefly discussed.
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