Evidence for color coherence in<i>pp¯</i>collisions at √<i>s</i>=1.8 TeV

Abstract

Color coherence effects in pp\ifmmode\bar\else\textasciimacron\fi{} collisions are observed and studied with CDF, the Collider Detector at the Fermilab Tevatron collider. We demonstrate these effects by measuring spatial correlations between soft and leading jets in multijet events. Variables sensitive to interference are identified by comparing the data to the predictions of various shower Monte Carlo programs that are substantially different with respect to the implementation of coherence.