Angular Distribution of Particle Flows and Perturbative QCD Predictions

Details Angular Distribution of Particle Flows and Perturbative QCD Predictions Angular Distribution of Particle Flows and Perturbative QCD Predictions

2002-12-13

arxiv.org/abs/hep-ph/0212189v2

Eur.Phys.J.C28:313-319,2003

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 4 Figs., more details of calculation in sect. 2.1

Scientific paper

10.1140/epjc/s2003-01175-7

We discuss the predictions of perturbative QCD for angular flows of final state particles in two and three jet events including their cms energy and jet resolution (y_{cut}) dependence. The simple analytical formulae for gluon bremsstrahlung from primary partons, modified for gluon cascading, reproduce the main features of the experimental data well. For y_{cut}-selected events, the particle flow is derived from a superposition of colour dipoles in much the same way that photon radiation is derived from electric dipoles.

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