Search for the associated production of charginos and neutralinos in the like-sign dimuon channel with D0 RunIIb data.

A serch for associated production of charginos and neutralinos has been performed in $p\bar p$ collisions recorded with the D0 detector. The final state with two like sign muons and missing transverse energy is considered. The dataset used in this analysis corresponds to $\approx3 fb^{-1}$ integrated luminosity. The preliminary limit on the chargino production cross section times branching ratio into trileptons has been set.