Scalar tau Signal at LEP 2 in models with Gauge Mediated Supersymmetry Breaking

In theories with gauge mediated supersymmetry breaking, the scalar tau, (˜ τ 1) is the lightest observable superpartner for part of the parameter space. At LEP 2, the production of such a ˜ τ 1 pair and their subsequent decays give rise to a pair of τ leptons plus missing energy from the unobserved gravitinos. The angular distributions of the τ 's are different from those arising from the production and decay of W pairs, and thus will constitute an interesting signal for supersymmetry. We also consider˜τ 1 pair production in the complementary part of parameter space where the lightest neutralino is lighter than the˜τ 1 .