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Comparison of the particle flow in qqˉγ and qqˉg events frome + e − annihilations at PETRA

Research output: Contribution to journalJournal article

Published

Journal publication date1988
JournalZeitschrift für Physik C: Particles and Fields
Journal number1
Volume39
Number of pages6
Pages1-6
Original languageEnglish

Abstract

The particle flow distributions in the event plane of 3-jet (e+e−→qqˉg) and of radiative 2-jet (e+e−→qqˉγ) events are compared at a centre of mass energy of 35 GeV. The number of particles in the angular region opposite to the gluon in qqˉg events is found to be significantly reduced relative to the number of particles in the region opposite to the hard photon in qqˉγ events. This depletion is expected from the “string effect” observed in 3-jet events. It can be explained within the framework of QCD as arising from soft gluon interference.