Alternative mass-shell renormalization for a minimal supersymmetric Higgs sector

An Aoki–Denner form of the renormalization scheme is suggested for the physical amplitudes in the minimal supersymmetric standard model. With the more explicit wave-function renormalization, the scheme is parameterized by the mass of the physical pseudoscalar () and the mass of heavy CP-even neutral Higgs () instead of the conventional , as input. The counterterm of is defined on mass shell perturbatively just within the Higgs sector. The renormalization of gauge-scalar mixings are fixed by proper Ward–Takahashi identities. The effect of the reparameterization is also probed to the radiative correction of the mass of the lightest Higgs. Received: 23 March 1999 / Published online: 16 November 1999