Electroproduction and hadroproduction of light gluinos.

Abstract

In a class of supergravity models, the gluino and photino are massless at tree level and receive small masses through radiative corrections. In such models, one expects a gluino-gluon bound state, the $R_0$, to have a mass of between 1.0 and 2.2 GeV and a lifetime between $10^{-10}$ and $10^{-6}$ seconds. Applying peturbative QCD methods (whose validity we discuss), we calculate the production cross sections of $R_0$'s in $e-p$, $\pi-p$, $K-p$, $\overline{p}-p$ and $p-p$ collisions. Signatures are also discussed.