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 — preprints:2008:ttp08-43 [2016/03/17 11:03] (current) Line 1: Line 1: + ====== TTP08-43 ${\cal O}(\alpha\alpha_s)$ corrections to the $\gamma t\bar{t}$ vertex at the top quark threshold ====== + + + We compute the last missing piece of the + ​two-loop ${\cal O}(\alpha \alpha_s)$ corrections + to $\gamma t \bar{t}$ vertex at the $t \bar{t}$ threshold + due to the exchange of a $W$ boson and a gluon. This contribution + ​constitutes a building + block of the top quark threshold production cross section at electron + ​positron colliders. + ​ + |**Yuichiro Kiyo, Dirk Seidel, Matthias Steinhauser** ​ | + |**  JHEP  0901 038 2009  **  | + | {{preprints:​2008:​ttp08-43.pdf|PDF}} {{preprints:​2008:​ttp08-43.ps|PostScript}} [[http://​arxiv.org/​abs/​0810.1597|arXiv]] [[http://​ttp.kit.edu/​Progdata/​ttp08/​ttp08-43|Programs and Data]] ​  | + | |