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

Davies, Joshua; Gröber, Ramona; Maier, Andreas; Rauh, Thomas; Steinhauser, Matthias (18 February 2020). Padé approach to top-quark mass effects in gluon fusion amplitudes. PoS - proceedings of science, 375. Trieste, Italy: Scuola Internazionale Superiore di Studi Avanzati SISSA 10.22323/1.375.0079

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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.

Item Type:

Conference or Workshop Item (Paper)

Division/Institute:

10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC)
08 Faculty of Science > Institute of Theoretical Physics

UniBE Contributor:

Rauh, Thomas Johannes Georg

Subjects:

500 Science > 530 Physics

ISSN:

1824-8039

Publisher:

Scuola Internazionale Superiore di Studi Avanzati SISSA

Language:

English

Submitter:

Esther Fiechter

Date Deposited:

15 Apr 2020 14:00

Last Modified:

15 Apr 2020 14:00

Publisher DOI:

10.22323/1.375.0079

ArXiv ID:

1912.04097

BORIS DOI:

10.7892/boris.141210

URI:

https://boris.unibe.ch/id/eprint/141210

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