Friday 18 February 2011, 11:00h, at Nikhef in H331
Speaker: Stefan Kluth (MPI für Physik, München)
Title: NNLO QCD analyses of e+e- annihilation to hadrons
Abstract:
The talk will introduce into analysis of data from e+e- annihilation to hadrons in terms of jets and event shapes by JADE at PETRA, OPAL at LEP and other experiments. QCD predictions in NNLO, combined with resummed logarithmic terms in next-to-leading-log-approximation, are compared in several analyses to the data and the value of the strong coupling is extracted. Different approaches to modelling hadronisation effects, namely Monte Carlo event generators and analytic models, are used in the analyses and due to the improved perturbative predictions a better understanding of the hadronisation models emerges.
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