A Study of coherence of soft gluons in hadron jets - INSPIRE

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A Study of coherence of soft gluons in hadron jets

OPAL

Collaboration

Jun, 1990

12 pages

Published in:

Phys.Lett.B 247 (1990) 617-628

Published: 1990

DOI:

10.1016/0370-2693(90)91911-T

Report number:

CERN-EP-90-94

Experiments:

CERN-LEP-OPAL

View in:

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Abstract: (Elsevier)

We study the inclusive momentum distribution of charged particles in multihadronic events produced in e + e − annihilations at E CM ∼ M (Z 0 ). We find agreement with the analytical formulae for gluon production that include the phenomena of soft gluon interference. Using data from CM energies between 14 and 91 GeV, we study the dependence of the inclusive momentum distribution on the centre of momentum energy. We find that the analytical formulae describe the data over the entire energy range. Both the momentum distribution at a fixed energy and the change with energy are described by QCD shower Monte Carlo's which include either coherent gluon branchings or string fragmentation. Simple incoherent models with independent fragmentation fail to reproduce the energy dependence and momentum spectra.

electron positron: colliding beams
colliding beams: electron positron
electron positron: annihilation
annihilation: electron positron
jet: electroproduction
electroproduction: jet
hadron: multiple production
multiple production: hadron
momentum spectrum: (charged particle)
energy dependence

References(20)

Figures(0)

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