The partonic origin of multiplicity scaling in heavy and light flavor jets

TL;DR

This paper investigates the origin of multiplicity scaling in heavy and light flavor jets, revealing that initial hard parton production drives the observed KNO-like scaling, rather than later-stage processes.

Contribution

It demonstrates through Monte Carlo simulations that the multiplicity scaling is primarily determined by initial parton production rather than subsequent QCD processes.

Findings

Heavy-flavor jets from leading-order processes show flavor dependence.

Jets from the parton shower follow the inclusive-jet pattern.

KNO-like scaling is driven by initial hard parton production.

Abstract

It has recently been shown that a KNO-like scaling is fulfilled inside the jets, which indicates that the KNO scaling is violated by complex vacuum-QCD processes outside the jet development, such as single and double parton scattering or softer multiple-parton interactions. In the current work we investigated the scaling properties of heavy-flavor jets using Monte-Carlo simulations. We found that while jets from leading-order flavor-creation processes exhibit a flavor-dependent pattern, heavy-flavor jets from production in the parton shower follow the inclusive-jet pattern. This suggests that the KNO-like scaling is driven by initial hard parton production and not by processes in the later stages of the reaction.