B. Grzadkowski et Jf. Gunion, USING DECAY ANGLE CORRELATIONS TO DETECT CP VIOLATION IN THE NEUTRAL HIGGS SECTOR, Physics letters. Section B, 350(2), 1995, pp. 218-224
We demonstrate that decay angle correlations in tau(-) tau(+) and ($)
over bar tt decay modes could allow a determination of whether or not
a neutral Higgs boson is a CP eigenstate. Sensitivity of the correlati
ons is illustrated in the case of the e(+)e(-) --> ZH and mu(+) mu(-)
--> H production processes for a two-doublet Higgs model with CP-viola
ting neutral sector. A very useful technique for minimizing 'depolariz
ation-factor' suppressions of the correlations in the ($) over bar tt
mode is introduced.