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QCD effects and b-tagging at LEP I |
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| Authors: | S. Moretti J. B. Tausk |
| Affiliation: | 1. Department of Physics, University of Durham, South Road, Durham, DH1 3LE, UK 2. Dipartimento di Fisica Teorica, Università di Torino, and INFN, Sezione di Torino, V. Pietro Giuria 1, I-10125, Torino, Italy 3. Institut für Physik (THEP), Johannes Gutenberg-Universit?t, Staudingerweg 7, D-55099, Mainz, Germany |
| Abstract: | We analyze the impact of using b-tagged samples in studying non-Abelian effects due to QCD in e + e ? → 4jet events at ${sqrt s=M_{Z^0}}$, using angular variable analyses and comparisons with e + e ? → 3jetγ 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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