Decay-lepton angular distribution in polarized e(+)e(-)->(tt)over-bar and CP-violating dipole couplings of the top quark

In the presence of an electric dipole coupling of <t(t)over bar> to a photon, and an analogous ''weak'' dipole coupling to the Z, CP violation in the process e(+)e(-)--><t(t)over bar> leads to the polarization of the top quark and top antiquark. This polarization can be analyzed by studying the energy and angular distributions of a decay charged lepton (antilepton) when the top quark (top antiquark) decays leptonically. We have obtained analytic expressions for these distributions when either t or t decays leptonically. We Study two types of simple CP-violating angular asymmetries which do not need the full reconstruction of t or (t) over bar. These together can help to determine the electric and weak dipole form factors independently. We have also shown how the use of longitudinal beam polarization can help to do this with only one asymmetry measurement, and to improve the sensitivity.