S. Ambrosanio et B. Mele, NEUTRALINO DECAYS IN THE MINIMAL SUPERSYMMETRIC STANDARD MODEL, Physical review. D. Particles and fields, 53(5), 1996, pp. 2541-2562
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.