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Evolution of average multiplicities of quark and gluon jets

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arxiv hep-ph/9910226 v2 pith:E4FE2PYR submitted 1999-10-04 hep-ph

A. Capella , I.M. Dremin , J.W. Gary , V.A. Nechitailo , J. Tran Thanh Van This is my paper · ORCID
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keywords jetsaverageenergygluonmultiplicitiesperturbativequarkcorrections
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The energy evolution of average multiplicities of quark and gluon jets is studied in perturbative QCD. Higher order (3NLO) terms in the perturbative expansion of equations for the generating functions are found. First and second derivatives of average multiplicities are calculated. The mean multiplicity of gluon jets is larger than that of quark jets and evolves more rapidly with energy. It is shown which quantities are most sensitive to higher order perturbative and nonperturbative corrections. We define the energy regions where the corrections to different quantities are important. The latest experimental data are discussed.

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  1. Measurement of $\Xi^-/\bar{\Xi}^{+}$ production in jets from $Z$ boson decays with the DELPHI open data

    hep-ex 2026-07 conditional novelty 6.0 of 10

    The first measurement of the gluon-to-quark production ratio for Ξ−/Ξ+ baryons in Z decays gives R=1.21±0.18±0.26, consistent with JETSET and with unity.

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