PHENOMENOLOGY OF 2 HIGGS DOUBLET MODELS WITH FLAVOR-CHANGING NEUTRAL CURRENTS

A comprehensive phenomenological analysis of a two Higgs doublet model , with flavor-changing scalar currents at the tree level, called model III, is presented. Constraints from existing experimental information especially an Delta F=2 processes are systematically incorporated. Co nstraints emerging from rare B decays, <Z-->b(b)over bar>, and the rho parameter are also examined. Experimental implications for e(+)e(-)(m u(+)mu(-))--><t(c)over bar>+<(t)over bar c>, t-->c gamma(Z,g), D-0-(D- 0) over bar,and B-s(0)-<(B-s(0))over bar> oscillations, and far e(+)e( -)(Z)--><b(s)over bar>+<(b)over bar s> investigated and experimental e ffort towards these is stressed. We also emphasize the importance of c larifying the experimental issues pertaining to Z--><b(b)over bar>.