Publicação: Glue-and-cut at five loops
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We compute ε-expansions around 4 dimensions of a complete set of master integrals for momentum space five-loop massless propagator integrals in dimensional regularization, up to and including the first order with contributions of transcendental weight nine. Our method is the glue-and-cut technique from Baikov and Chetyrkin, which proves extremely effective in that it determines all expansion coefficients to this order in terms of recursively one-loop integrals and only one further integral. We observe that our results are compatible with conjectures that predict π-dependent contributions.
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Perturbative QCD, Renormalization Regularization and Renormalons, Scattering Amplitudes
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Inglês
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Journal of High Energy Physics, v. 2021, n. 9, 2021.
