Invisible Decays of Supersymmetric Higgs Bosons

We study the detection of the complete spectrum of Higgs bosons of the minimal supersymmetric standard model, through their decays into chargino (χ-tildei±) and neutralinos (χ-tildeio), for several parametric scenarios. In the minimal supersymmetric model there are two charginos and four neutralinos, and the Higgs boson spectrum contains three neutral scalars, two CP-even (h0 and H0 with mH0>mh0) and one CP-odd (A0, with mA0 as a free parameter); as well as a charged pair (H±). An interesting signal comes from the decays of the Higgs bosons into invisible SUSY modes (h0, H0,A0→χ-tilde1oχ-tilde1o), which could be detected at present and future high energy machines.