Identified charged particles in quark and gluon jets - INSPIRE

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Identified charged particles in quark and gluon jets

DELPHI

Collaboration

Jan, 2000

26 pages

Published in:

Eur.Phys.J.C 17 (2000) 207-222

e-Print:

hep-ex/0106063 [hep-ex]

DOI:

10.1007/s100520000449

Report number:

CERN-EP-2000-007

Experiments:

CERN-LEP-DELPHI

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Abstract: (arXiv)

A sample of 2.2 million hadronic Z decays, selected from the data recorded by the Delphi detector at LEP during 1994-1995 was used for an improved measurement of inclusive distributions of pi+, K+ and p and their antiparticles in gluon and quark jets. The production spectra of the individual identified particles were found to be softer in gluon jets compared to quark jets, with a higher multiplicity in gluon jets as observed for inclusive charged particles. A significant proton enhancement in gluon jets is observed indicating that baryon production proceeds directly from colour objects. The maxima, xi^*, of the xi-distributions for kaons in gluon and quark jets are observed to be different.

Note:

24 pages, 12 figures Report-no: CERN-EP/2000-007 Journal-ref: Eur. Phys. J. C 17 (2000) 207-222

electron positron: colliding beams
electron positron: annihilation
Z0: electroproduction
Z0: hadronic decay
quark: jet
gluon: jet
charged particle: multiplicity
pi
K
p

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