Do Two Jet Events in e+e- Collision Observe KNO Scaling?
نویسندگان
چکیده
منابع مشابه
KNO scaling 30 years later
KNO scaling, i.e. the collapse of multiplicity distributions Pn onto a universal scaling curve manifests when Pn is expressed as the distribution of the standardized multiplicity (n− c)/λ with c and λ being location and scale parameters governed by leading particle effects and the growth of average multiplicity. At very high energies, strong violation of KNO scaling behavior is observed (pp̄) an...
متن کاملScaling Violations of Quark and Gluon Jet Fragmentation Functions in Ee Annihilations
Hadron production in high energy collisions can be described by parton showers, followed by the formation of hadrons which cannot be described perturbatively. Gluon emission, the dominant process in parton showers, is proportional to the colour factor associated with the coupling of the emitted gluon to the emitter. These colour factors are CA = 3 when the emitter is a gluon and CF = 4/3 when i...
متن کاملKNO scaling in processes of electron - positron annihilation to hadrons
The charged particles multiplicity distribution in the KNO form is discussed in processes of ee annihilation at energies √ s 14 – 206.2 GeV. The experimental data are compared to data, obtained with Monte Carlo simulation in PYTHIA in the Lund quark string model. It is shown, that both experimental and simulated data are described by the same distribution function in the KNO form. It is shown, ...
متن کاملUsing Two-jet Events to Understand Hadronization
While the hard phase of the strong interaction is well described by perturbative QCD, the soft hadronization phase is less understood. Benefiting from the high statistics from e+e− experiments at the Z resonance, it is possible to impose strong two-jet cuts on the data without loosing the statistical significance. In these events perturbative activity is suppressed and hadronization effects can...
متن کاملKNO scaling function of modified negative binomial distribution
We investigate the KNO scaling function of the modified negative binomial distribution (MNBD), because this MNBD can explain the oscillating behaviors of the cumulant moment observed in e+e− annihilations and in hadronic collisions. By using a straightforward method and the Poisson transform we derive the KNO scaling function from the MNBD. The KNO form of experimental data in e+e− collisions a...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Progress of Theoretical Physics Supplement
سال: 2013
ISSN: 0375-9687
DOI: 10.1143/ptp.85.136