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arXiv · 2112.07578

Two-loop amplitude for mixed QCD-EW corrections to $gg \to Hg$

Matteo Becchetti·Francesco Moriello·Armin Schweitzer
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Abstract

We report on the two-loop amplitude computation for the mixed QCD-electroweak corrections to the process $gg \to Hg$, with exact dependence on the electroweak boson masses. This amplitude has been employed in the computation of next-to-leading order (NLO) mixed QCD-electroweak corrections to the Higgs-boson production rate in arXiv:2010.09451. The master integrals that appear in the amplitude are evaluated by means of generalized power series expansions, which allows for fast and high-precision numerical evaluation of the amplitude in the physical phase-space, proving to be a powerful tool for phenomenological applications.

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Matteo Becchetti, Francesco Moriello, Armin Schweitzer. 2021-12-14. Two-loop amplitude for mixed QCD-EW corrections to $gg \to Hg$. https://doi.org/10.1007/jhep04(2022)139

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