Gluon- and Quark-Jet Multiplicities with NNNLO and NNLL Accuracy

We present a new approach to consider and include both the perturbative and the non-perturbative contributions to the multiplicities of gluon and quark jets. Thanks to this new method, we have included for the first time new contributions to these quantities obtaining next-to-next-to-leading-logarit...

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Bibliographic Details
Published inarXiv.org
Main Authors Bolzoni, P, Kniehl, B A, Kotikov, A V
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 14.01.2013
Subjects
Physics - High Energy Physics - Phenomenology
Quarks
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Summary:We present a new approach to consider and include both the perturbative and the non-perturbative contributions to the multiplicities of gluon and quark jets. Thanks to this new method, we have included for the first time new contributions to these quantities obtaining next-to-next-to-leading-logarithmic resummed formulas. Our analytic expressions depend on two non-perturbative parameters with a clear and simple physical interpretation. A global fit of these two quantities shows how our results solve a longstanding discrepancy in the theoretical description of the data.
Bibliography:DESY-12-160
ISSN:2331-8422
DOI:10.48550/arxiv.1209.5914