QCD effects and $b$-tagging at LEP I

Abstract

We analyze the impact of using $b$-tagged samples in studying non-Abelian effects due to QCD in $e^+e^-\ar 4$jet events at $\sqrt{s}=M_{Z^0}$, using angular variable analyses and comparisons with $e^+e^-\ar 3 \mbox{jet}γ$ events. We find that QCD effects are largely enhanced in $b$-quark samples with respect to `unflavoured' ones, where energy-ordering is used to distinguish between gluon and quark jets. We show that the $b$-quark mass influences the angular distributions significantly and should not be neglected

16 pages, latex, 11 figures appended (tarred and uuencoded), the complete paper is available via anonymous ftp at ftp://cpt1.dur.ac.uk/pub/preprints/dtp94/dtp94104/ (get dtp94104_*.ps)

References in corpus (1)

• Heavy Quarks and Leptons at $e^{+}{e}^{-}$ Colliders

Cited by in corpus (2)

• Full One-loop Electro-Weak Corrections to Three-jet Observables at the Z pole and Beyond
• Light, long-lived and secluded: can gluinos be driven out from LEP1 data ?