W. Bernreuther et al., CP VIOLATION BEYOND THE STANDARD MODEL AND TAU-PAIR PRODUCTION IN E(-) COLLISIONS()E(), Physics letters. Section B, 391(3-4), 1997, pp. 413-419
We show that the CP-violating dipole form factors of the tau lepton ca
n be of the order of alpha/pi in units of the length scale set by the
inverse Z boson mass. We propose a few observables which are sensitive
to these form factors at LEP2 and higher e(+)e(-) collision energies.