Collider signals of a superlight gravitino

Supergravity theories with a superlight gravitino (of mass $\sim m_W^2{M}_{\mathrm{pl}}^{-1\mathrm{}}$) are shown to give rise to monojet and dijet events with large missing $p_T$ which should be observable at the Fermilab Tevatron collider. For a gluino mass less than 200 GeV, the signal is much bigger than expected from the standard model or the usual supergravity theory. The observation of such events will thus be a clear signal of supersymmetry.