Measurement of charged-particle multiplicity distributions and their H_q moments in hadronic Z decays at LEP

TL;DR

This paper measures charged-particle multiplicity distributions and their H_q moments in hadronic Z decays at LEP, revealing quasi-oscillatory behavior and providing insights into particle production mechanisms.

Contribution

It presents the first detailed measurement of multiplicity distributions and H_q moments in Z decays, analyzing their oscillatory patterns across different quark flavors.

Findings

H_q moments exhibit quasi-oscillations as a function of rank.

Differences observed between light-quark and b-quark events.

Results support theoretical models of particle production.

Abstract

The charged-particle multiplicity distribution is measured for all hadronic events as well as for light-quark and b-quark events produced in e+e- collisions at the Z pole. Moments of the charged-particle multiplicity distributions are calculated. The H moments of the multiplicity distributions are studied, and their quasi-oscillations as a function of the rank of the moment are investigated.