Gluon- and Quark-Jet Multiplicities with NNNLO and NNLL Accuracy
High Energy Physics - Phenomenology
2013-01-15 v3
Abstract
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.
Keywords
Cite
@article{arxiv.1209.5914,
title = {Gluon- and Quark-Jet Multiplicities with NNNLO and NNLL Accuracy},
author = {P. Bolzoni and B. A. Kniehl and A. V. Kotikov},
journal= {arXiv preprint arXiv:1209.5914},
year = {2013}
}
Comments
4pages, 2 figures; final published version