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arXiv · hep-ph/9503354

QCD effects and $b$-tagging at LEP I

S. Moretti·J. B. Tausk
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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

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S. Moretti, J. B. Tausk. 1995-03-16. QCD effects and $b$-tagging at LEP I. https://doi.org/10.1007/s002880050067

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