Hadronisation effects in event-shape moments
نویسندگان
چکیده
منابع مشابه
Tests of analytical hadronisation models using event shape moments in e + e − annihilation
Predictions of analytical models for hadronisation, namely the dispersive model, the shape function and the single dressed gluon approximation, are compared with moments of hadronic event shape distributions measured in ee annihilation at centre-of-mass energies between 14 and 209GeV. In contrast to Monte Carlo models for hadronisation, analytical models require to adjust only two universal par...
متن کاملHadronization effects in event shape moments
We study the moments of hadronic event shapes in e + e ‐ annihilation within the context of next-to-next-to-leading order (NNLO) perturbative QCD predictions combined with non-perturbative power corrections in the dispersive model. This model is extended to match the NNLO perturbative prediction. The resulting theoretical expression has been compared to experimental data from JADE and OPAL, and...
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We discuss a selection of important recent H1 and ZEUS results on hadronic final states in deep-inelastic ep scattering at HERA.
متن کاملSuppressed power corrections for moments of event-shape variables in e+e− annihilation∗
Power corrections that fall as 1/Q, where Q is the center-of-mass energy, play a significant role in the phenomenology of the average values of event-shape variables like the thrust T . These power corrections can be analyzed in perturbative QCD using renormalon resummation in the single dressed gluon approximation. They originate in a particular part of phase-space where a soft gluon is emitte...
متن کاملHadronisation at Lep
An overview of recent results from LEP concerning the hadronisation process is presented. Emphasis is placed on the b-quark. The first presented analysis is the measurement of the b-quark fragmentation function. It includes a new, hadronic-model independent method to extract the x-dependence of the non-perturbative QCD component from the measured fragmentation function. This is followed by the ...
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ژورنال
عنوان ژورنال: The European Physical Journal C
سال: 2010
ISSN: 1434-6044,1434-6052
DOI: 10.1140/epjc/s10052-010-1288-4