SEARCH FOR CHARGINOS MASS-DEGENERATE WITH THE LSP

The search performed in the DELPHI experiment at LEP for charginos mas s-degenerate with the lightest neutralino, assumed to be the Lightest Supersymmetric Particle (LSP), is described. Degeneracies below 3 GeV/ c(2) are not considered so far in the standard searches, because of th e loss of efficiency. Several search strategies are proposed here for the runs of LEP at high energy, each of which is able to explore a dif ferent range in the mass splitting between the chargino and the neutra lino.