Preprint / hep-ph arXiv:0902.3267

Threshold corrections to the gamma t anti-t vertex at O(alpha alpha(s))

Seidel, Dirk


Abstract: In these proceedings a recent calculation of the last missing piece of the two-loop O(alpha alpha(s)) corrections to gamma t anti-t vertex at the t anti-t threshold due to the exchange of a W boson and a gluon is summarised. The calculation constitutes a building block of the top quark threshold production cross section at electron positron colliders.

Note: Comments: LCWS08 proceedings

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 Record created 2009-03-31, last modified 2009-03-31

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