The negative binomial distribution in quark jets with fixed flavour

Abstract

We show that both the multiplicity distribution and the ratio of factorial cumulants over factorial moments for 2-jet events in e+e- annihilation at the Z^0 peak can be well reproduced by the weighted superposition of two negative binomial distributions, associated to the contribution of $b\bar{b}$ and light flavoured events respectively. The negative binomial distribution is then suggested to describe the multiplicity distribution of 2-jet events with fixed flavour.

LaTeX, 15 pages including 4 Postscript figures, uses epsfig.sty and rotating.sty

References in corpus (4)

• Cumulant to Factorial Moment Ratio and Multiplicity Data
• Properties of Factorial Cumulant to Factorial Moment Ratio
• Common origin of the shoulder in multiplicity distributions and of oscillations in the factorial cumulants to factorial moments ratio
• Factorial and Cumulant Moments in $e^{+}{e}^{-}\to$ Hadrons at the Z${}^0$ Resonance

Cited by in corpus (4)

• Hadron Multiplicities
• Possible scenarios for soft and semi-hard components structure in central hadron-hadron collisions in the TeV region
• Moment Analysis, Multiplicity Distributions and Correlations in High Energy Processes: Nucleus-Nucleus Collisions
• Oscillations of Moments and Structure of Multiplicity Distributions in e+e- Annihilation