In Fermilab experiment E683 we have used a large solid angle calorimeter to study the production of hadronic events with large transverse energy in [Formula presented] and [Formula presented] collisions at center-of-mass energies from 20 to 25 GeV. We observe a sudden shift in [Formula presented] event topology with increasing transverse energy, indicative of the emergence of jet dominance. This is the first observation of such a shift in event topology in fixed-target interactions. [Formula presented] interactions in the same kinematic region and under identical triggering conditions exhibit only a slight shift in event topology.
|Journal||Physical Review D - Particles, Fields, Gravitation and Cosmology|
|State||Published - 1997|