We show some new applications of on-shell methods to calculate compact helicity amplitudes for tt̄ production through gluon fusion. The rational and mass renormalisation contributions are extracted from two independent Feynman diagram based approaches. © 2010 Elsevier B.V.
Analytic computations of massive one-loop amplitudes
Badger S.;
2010-01-01
Abstract
We show some new applications of on-shell methods to calculate compact helicity amplitudes for tt̄ production through gluon fusion. The rational and mass renormalisation contributions are extracted from two independent Feynman diagram based approaches. © 2010 Elsevier B.V.
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