ar X iv : h ep - p h / 97 09 25 3 v 1 5 S ep 1 99 7 Higgs Particle Decays in Supersymmetry 1

We present a detailed study of the decays of the Higgs bosons H, H, and A within the Minimal Supersymmetric Standard Model including SUSY–QCD corrections. We find that the supersymmetric modes t̃ ̄̃ b (t̃̄t̃, and for large tanβ b̃ ̄̃ b) can dominate the H (H, A) decays in a wide range of the model parameters due to the large Yukawa couplings and mixings of t̃ and b̃. Compared to the conventional modes H → τντ , tb̄, and H, A → tt̄, bb̄, the supersymmetric modes can have an important impact on the Higgs boson searches at future colliders.