        EXPECTED_LEP = "motivated by some recent studies on the light cp - odd higgs boson @xmath0 in non - minimal supersymmetric models, we investigate the rare @xmath1-decays @xmath2 ( @xmath3 ) in the two higgs doublet model ( 2hdm ), the nearly minimal supersymmetric standard model ( nmssm ), the next - to - minimal supersymmetric standard model ( nmssm ) and the minimal supersymmetric standard model ( mssm ).<n> we find that the branching ratios of @xmath4 can reach @xmath5 in 2hdm, @xmath6 in nmssm and @xmath7 in mssm, which are at the level of @xmath8 in 2hdm, @xmath9 in nmssm and @xmath10 in mssm, respectively.<n> these rates can be significantly enhanced in new physics models which lie within the expected sensitivity of the gigaz option of the international linear collider ( ilc ). <n> = # 1,nucl. <n> phys. <n> b * # 1"
