SUSY-Like Relation in Evolution of Gluon and Quark Jet Multiplicities
Journal Article
·
· Physics of Particles and Nuclei
- II. Institut für Theoretische Physik, Universität Hamburg, Hamburg (Germany)
We show the new relationship [1] between the anomalous dimensions, resummed through next-to-next-to-leading-logarithmic order, in the Dokshitzer–Gribov–Lipatov–Altarelli–Parisi (DGLAP) evolution equations for the first Mellin moments D{sub q,g}(μ{sup 2}) of the quark and gluon fragmentation functions, which correspond to the average hadron multiplicities in jets initiated by quarks and gluons, respectively. This relationship, which is independent of the number of quark flavors, strongly improves previous treatments by allowing for an exact solution of the evolution equations. So far, such relationships have only been known from supersymmetric QCD.
- OSTI ID:
- 22981803
- Journal Information:
- Physics of Particles and Nuclei, Journal Name: Physics of Particles and Nuclei Journal Issue: 5 Vol. 49; ISSN 1063-7796
- Country of Publication:
- United States
- Language:
- English
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