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

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

2009-02-18

arxiv.org/abs/0902.3267v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

LCWS08 proceedings

Scientific paper

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.

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