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QCD effects andb-tagging at LEP I

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Zeitschrift für Physik C Particles and Fields

Abstract

We analyze the impact of usingb-tagged samples in studying non-Abelian effects due to QCD ine + e − → 4jet events at √s=M z 0, using angular variable analyses and comparisons withe + e − → 3jetγ events. We find that QCD effects are largely enhanced inb-quark samples with respect to ‘unflavoured’ ones, where energy-ordering is used to distinguish between gluon and quark jets. We show that theb-quark mass influences the angular distributions significantly and should not be neglected.

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Authors and Affiliations

  1. Department of Physics, University of Durham, South Road, DH1 3LE, Durham, UK

    S. Moretti

  2. Dipartimento di Fisica Teorica, Università di Torino, and INFN, Sezione di Torino, V. Pietro Giuria 1, I-10125, Torino, Italy

    S. Moretti

  3. Institut für Physik (THEP), Johannes Gutenberg-Universität, Staudingerweg 7, D-55099, Mainz, Germany

    J. B. Tausk

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  1. S. Moretti
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  2. J. B. Tausk
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Work supported in part by Ministero dell’ Università e della Ricerca Scientifica

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Moretti, S., Tausk, J.B. QCD effects andb-tagging at LEP I. Z. Phys. C - Particles and Fields 69, 635–646 (1995). https://doi.org/10.1007/BF02907447

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  • DOI: https://doi.org/10.1007/BF02907447

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