The Search for Anomalous W^+ W^- t \bar{t} Couplings at the LC

Abstract

We study production of t \bar{t} via W^+ W^--fusion, including the relevant backgrounds at the proposed Linear Collider (an e^+ e^- collider with \sqrt{S} = 1.5 TeV) in the context of a Higssless Standard Model (HSM), i.e. a nonlinear SU(2)_L \times U(1)_Y chiral Lagrangian, including dimension five W^+ W^- t \bar{t} interactions. Deviation from the HSM predictions can be used to constrain the coefficients of these operators to an order of 10^-1 (divided by the cut-off scale \Lambda = 3.1 TeV) with a 95% C.L..