Two-loop mixed QCD-EW corrections to gg → Hg

Marco Bonetti, Erik Panzer, Vladimir A. Smirnov, Lorenzo Tancredi

Publikation: Beitrag in FachzeitschriftArtikelBegutachtung

24 Zitate (Scopus)

Abstract

We compute the two-loop mixed QCD-Electroweak (QCD-EW) corrections to the production of a Higgs boson and a gluon in gluon fusion through a loop of light quarks. The relevant four-point functions with internal massive propagators are expressed as multiple polylogarithms with algebraic arguments. We perform the calculation by integration over Feynman parameters and, independently, by the method of differential equations. We compute the two independent helicity amplitudes for the process and we find that they are both finite. Moreover, we observe a weight drop when all gluons have the same helicity. We also provide a simplified expression for the all-plus helicity amplitude, which is optimised for fast and reliable numerical evaluation in the physical region.

OriginalspracheEnglisch
Aufsatznummer45
FachzeitschriftJournal of High Energy Physics
Jahrgang2020
Ausgabenummer11
DOIs
PublikationsstatusVeröffentlicht - Nov. 2020
Extern publiziertJa

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