English

QCD-inspired description of multiplicity distributions in jets

High Energy Physics - Phenomenology 2025-10-16 v2

Abstract

We suggest a universal QCD-motivated expression for the Polyakov-KNO multiplicity distributions of hadrons in jets and compare it with data from e+ee^+e^- annihilation experiments. The moments and overall shape of the distributions in full events and quark and gluon jets, over a range of energies, are described with reasonable quantitative precision. In particular, the scaling violation predicted by QCD is seen clearly in the moments and high-multiplicity fluctuations.

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Cite

@article{arxiv.2507.07691,
  title  = {QCD-inspired description of multiplicity distributions in jets},
  author = {Yu. L. Dokshitzer and B. R. Webber},
  journal= {arXiv preprint arXiv:2507.07691},
  year   = {2025}
}

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published version