Rapidity Gaps in Quark and Gluon Jets - a Perturbative Approach

Details Rapidity Gaps in Quark and Gluon Jets - a Perturbative Approach Rapidity Gaps in Quark and Gluon Jets - a Perturbative Approach

1999-11-04

arxiv.org/abs/hep-ph/9911240v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages, 3 figs., to appear in Proc. XXIX Int. Symp. QCD & Multiparticle Production (ISMD99), Brown University, Providence, RI

Scientific paper

We derive the probability for rapidity gaps in a parton cascade and investigate the dual connection with hadronic final states. A good description of observations in e+e- annihilations is obtained by perturbative QCD calculations in MLLA using previously determined parameters (QCD scale \Lambda and k_T-cut-off Q_0) and applying the parton hadron duality picture. Further predictions are derived; especially, for gaps between jets at variable resolution we predict a strong variation of gap probabilities for small parameters y_{cut} -> 0 in the transition from jets to hadrons. Large gaps between partons correspond to large spatial separations of colour charges: a colour blanching mechanism by soft processes is suggested.

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