Glueball production in high-energy collisions.

Abstract

Using a nonrelativistic gluon bound-state model, we compute the subprocesses $\mathrm{qg}\ensuremath{\rightarrow}\mathrm{qG}$, $q\overline{q}\ensuremath{\rightarrow}\mathrm{gG}$, $\mathrm{gg}\ensuremath{\rightarrow}\mathrm{gG}$, and their contribution to the overall reaction $p\overline{p}\ensuremath{\rightarrow}\mathrm{j}\mathrm{e}\mathrm{t}\phantom{\rule{0ex}{0ex}}+\phantom{\rule{0ex}{0ex}}\mathrm{g}\mathrm{l}\mathrm{u}\mathrm{e}\mathrm{b}\mathrm{a}\mathrm{l}\mathrm{l}\phantom{\rule{0ex}{0ex}}+X$, assuming that the glueball $G$ and the quark (gluon) jet are emitted with their transverse momenta large (> 10 GeV), opposite, and approximately equal. We show that, for present glueball candidates and for their possible quantum states, fairly large predictions are obtained, thus justifying future experiments of this type that might be performed at high-energy $p\overline{p}$ or $\mathrm{pp}$ colliders, such as the CERN $\mathrm{S}p\overline{p}\mathrm{S}$ or the Fermilab Tevatron.