Webs!

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• Chris White (Glasgow)
• Thursday 02 December 2010, 16:00-17:00
• MR15, CMS.

If you have a question about this talk, please contact Kazuki Sakurai.

It has long been known that soft (i.e. low-momentum) gauge bosons lead to unstable results in perturbation theory, in both abelian and non-abelian gauge theories. In non-abelian theories, the structure of soft gluon corrections can be described to all orders in perturbation theory in terms of a special class of Feynman diagrams called webs, for the case in which only two coloured particles are involved in a scattering process. In this seminar, I discuss the generalisation of this result to multiparticle scattering, revealing new mathematical structures in QCD . The results have applications to the resummation of large logarithms in QCD phenomenology, but may also be of interest to people studying N=4 Super-Yang-Mills theory. The talk is based on arXiv:1008.0098.

This talk is part of the HEP phenomenology joint Cavendish-DAMTP seminar series.

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