UNITARIZATION OF GLUON EXCHANGE AMPLITUDES AND RAPIDITY GAPS AT THE FERMILAB-TEVATRON - ART. NO. 014003

Rapidity gaps between two hard jets at the Fermilab Tevatron have been interpreted as being due to the exchange of two gluons which are in a n overall color-singlet state. We show that this simple picture involv es unitarity violating amplitudes. Unitarizing the gluon exchange ampl itude leads to qualitatively different predictions for the fraction of t-channel color singlet exchange events in forward qq, qg or gg scatt ering, which better fit Tevatron data. [S0556-2821(98)04613-X].