PoS - Proceedings of Science
Volume 467 - Loops and Legs in Quantum Field Theory (LL2024) - Plenary 1
NNLO corrections to Z+H production at lepton colliders
A. Freitas* and Q. Song
Full text: pdf
Published on: September 17, 2024
Abstract
A technique for computing electroweak next-to-next-to-leading order
(NNLO) corrections with arbitrary masses is described. It is based on using a dispersion relation and Feynman parameters for one of the two subloops and leads to low-dimensional numerical integrals for any $2\to2$ scattering process. UV divergencies can be treated with suitable subtraction terms. As a concrete phenomenological application, the calculation of electroweak NNLO corrections
with closed fermion loops to the process $e^+e^- \to ZH$ is discussed.
DOI: https://doi.org/10.22323/1.467.0001
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