Scaling violation in e+ e- fragmentation functions: QCD evolution, hadronization and heavy quark mass effects

Oct, 1993
50 pages
Published in:
  • Nucl.Phys.B 421 (1994) 473-517,
  • Nucl.Phys.B 480 (1996) 755 (erratum)
Report number:
  • CERN-TH-7018-93

Citations per year

1994200220102018202405101520
Abstract: (Elsevier)
Test of QCD in the process e + e − → h X, where h is any hadron species, or any charged hadron, are proposed, concentrating on the following topics: decomposition of the total inclusive cross section into transverse, longitudinal and asymmetric parts; extraction of the gluon fragmentation function from the longitudinal part; flavour sum rules for the asymmetric part; power corrections due to quark masses and hadronization; measurement of α s from a next-to-leading order analysis of scaling violation. We conclude that a number of novel tests can be performed using the very high statistics available at LEP, and that a comparison between LEP and lower-energy data, together with information on heavy quark fragmentation and some model-dependent assumptions about hadronization, could provide a useful measurement of α s .
  • electron positron: annihilation
  • annihilation: electron positron
  • electron positron: inclusive reaction
  • hadron: electroproduction
  • electroproduction: hadron
  • quantum chromodynamics: validity test
  • cross section: transverse
  • cross section: longitudinal
  • cross section: asymmetry
  • gluon: fragmentation function