High Order Perturbative QCD Approach to Multiplicity Distributions of Quark and Gluon Jets
I.M. Dremin, C.S. Lam, and V.A. Nechitailo
TL;DR
This paper calculates higher-order factorial moments of quark and gluon jet multiplicity distributions using perturbative QCD up to NNNLO, compares results with experimental data, and discusses the implications of high-order corrections.
Contribution
It introduces a high-order perturbative QCD method for calculating multiplicity moments of jets and compares these theoretical predictions with experimental results.
Findings
Calculated moments up to NNNLO agree with experimental data
High-order corrections significantly impact multiplicity predictions
Discussed alternative corrections and approaches in jet multiplicity analysis
Abstract
The second and third factorial moments of the multiplicity distributions of gluon and quark jets are calculated up to the next-to-next-to-next-to leading order in perturbative QCD, using the equations for generating functions. The results are confronted with experimental data. A general discussion on high order corrections revealed by such an approach is given. Other possible corrections and approaches are discussed as well.
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