THE DECAY H(0)-]A(0)A(0) - A COMPLETE ONE-LOOP CALCULATION IN THE MSSM

In the minimal supersymmetric standard model the decay h(0) --> A(0)A( 0) of the light neutral scalar h(0) is kinematically allowed for low v alues of tan beta when radiative corrections to the neutral Higgs mass es are taken into account. The width of this decay mode is revisited o n the basis of a complete one-loop diagrammatic calculation. We give t he analytical expressions and numerical results and compare them with the corresponding ones from the simpler and compact approximations of the effective potential method and the renormalization group approach.