Sep 9 – 13, 2019
Europe/Zurich timezone

Padé approach to top-quark mass effects in gluon fusion amplitudes

Sep 12, 2019, 11:30 AM
25m
Chambre du Trésorier

Chambre du Trésorier

Speaker

Thomas Johannes Georg Rauh (Universität Bern)

Description

Gluon fusion processes like single and double Higgs production exhibit slow convergence and pose severe computational challenges. We show how the top-quark mass dependence of the virtual amplitudes can be reconstructed with a conformal mapping and Padé approximants based on the expansion in the inverse top-quark mass and the non-analytic terms in the expansion around the top threshold. The method is then applied at two- and three-loop order.

Primary author

Thomas Johannes Georg Rauh (Universität Bern)

Presentation materials