NEUTRALINO DECAYS IN THE MINIMAL SUPERSYMMETRIC STANDARD MODEL

A complete phenomenological study of the next-to-lightest neutralino d ecays is performed in the MSSM. The widths and branching ratios for al l the possible decay channels (including the radiative decay <(chi)ove r tilde(2)(0)>--><(chi)over tilde(1)(0)>gamma and the decay into a Lig ht Higgs boson <(chi)over tilde(2)(0)> --> <(chi)over tilde(1)(0)h(0)> ) are studied in detail as functions of all the SUSY parameters of the model. Particular attention is paid to situations that are interestin g for searches at CERN LEP 2. Nontrivial decay patterns are found that critically depend on the region of the parameter space considered.