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arXiv · 1007.2384

Determining $\alpha_s$ at NNLO from Event Shape Data

Gionata Luisoni
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Abstract

We report on several methodologically different NNLO determinations of the strong coupling constant from event shapes and related observables in e+e- annihilation. The event shape distributions are analyzed within a combined framework of NNLO and NNLA resummation. We also investigate the role of hadronisation corrections, using both Monte Carlo generator predictions and analytic models to parametrise non-perturbative power corrections.

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Gionata Luisoni. 2010-07-14. Determining $\alpha_s$ at NNLO from Event Shape Data. https://arxiv.org/abs/1007.2384

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