CP violating Zt(t)over-bar and γt(t)over-bar couplings at a future e+e- collider -: art. no. 074003

The effect of new operators that give rise to CP-violating couplings of the type Zt (t) over bar and gamma t (t) over bar are examined at future electron positron linear colliders (FLC). The impact of these CP violating interactions over standard model predictions was studied for the process e(+)e(-) --> t (t) over bar with the subsequent decays t --> bl(+)nu(l) and (t) over bar --> (b) over bar l(-)v<(nu)over bar>(l), called the dilepton mode, and t --> bl(+)v(l) and (t) over bar --> <(bq)over bar>q' or t --> bq (q) over bar and (t) over bar --> (b) over bar l(-)<(nu)over bar>(l), called the single lepton mode, where the final leptons an l(+/-) = e(+/-) or mu(+/-), and the final quarks are q(q') = u(d) or c(s). A polarized electron beam and CP observables and asymmetries are used to impose bounds on the anomalous couplings.