  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.

High Energy Physics - Phenomenology