Three-loop corrections to $gg\to ZH$ in the large top quark mass limit
Joshua Davies, Dominik Grau, Kay Sch\"onwald, Matthias Steinhauser, Daniel Stremmer
TL;DR
This paper calculates three-loop virtual corrections for the process gg→ZH in the large top quark mass limit, providing detailed analytic results and numerical tools for improved precision in Higgs-Z boson production predictions.
Contribution
It introduces the first three terms in the 1/m_t expansion for the three-loop corrections to gg→ZH, enhancing theoretical accuracy.
Findings
Analytic expressions for form factors up to three terms in 1/m_t expansion.
Numerical routines implemented in C++ library ggxy.
Improved precision in theoretical predictions for gg→ZH process.
Abstract
We compute three-loop virtual corrections to the associated production of a Higgs boson with a boson in the large- limit. We describe in detail the application of the asymptotic expansion and provide, for all form factors, analytic results for the first three terms in the expansion. We also provide numerical routines implemented in the C++ library ggxy.
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Quantum Chromodynamics and Particle Interactions · Computational Physics and Python Applications