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Determining $\alpha_s$ at NNLO from Event Shape Data

High Energy Physics - Phenomenology 2010-11-19 v1
Authors: 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.

Keywords

next-to-leading order qcd qcd coupling constant

Cite

@article{arxiv.1007.2384,
  title  = {Determining $\alpha_s$ at NNLO from Event Shape Data},
  author = {Gionata Luisoni},
  journal= {arXiv preprint arXiv:1007.2384},
  year   = {2010}
}

Comments

6 pages, 1 figure; to appear in the proceedings of the DIS2010 conference - Firenze, April 19-23, 2010

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