Two-body decays of neutralinos and charginos

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Abstract
We give explicit formulas for the two-body decays of the neutralinos and charginos of the minimal model of supersymmetry. There are two possible classes of two-body final states: (i) neutralino or chargino plus a W, Z, or Higgs boson; and (ii) channels involving squarks or sleptons. The important features of these decays are illustrated and their phenomenological implications discussed. The two-body decay into the lightest Higgs boson is almost always present, and enhances the heavy-quark component of the final state. In addition, two-body-decay branching ratios into a W or Z can be large for the heaviest charginos and neutralinos.