-
Article
Open AccessRigidity results for Riemannian twistor spaces under vanishing curvature conditions
In this paper, we provide new rigidity results for four-dimensional Riemannian manifolds and their twistor spaces. In particular, using the moving frame method, we prove that
-
Article
Open AccessMuon-electron scattering at NNLO
We present the first calculation of the complete set of NNLO QED corrections for muon-electron scattering. This includes leptonic, non-perturbative hadronic, and photonic contributions. All fermionic correctio...
-
Article
Open AccessTheory for muon-electron scattering @ 10 ppm
We review the current status of the theory predictions for elastic \(\mu \)μ-e scattering, describing the recent activities and future plans of the theory initiative related to the proposed MUonE experiment.
-
Article
Open AccessTo \({d}\) , or not to \({d}\) : recent developments and comparisons of regularization schemes
We give an introduction to several regularization schemes that deal with ultraviolet and infrared singularities appearing in higher-order computations in quantum field theories. Comparing the computation of si...
-
Article
Open AccessOn the four-dimensional formulation of dimensionally regulated amplitudes
Elaborating on the four-dimensional helicity scheme, we propose a pure four-dimensional formulation (FDF) of the \(d\) ...
-
Article
Open AccessScattering amplitudes from unitarity-based reduction algorithm at the integrand-level
samurai is a tool for the automated numerical evaluation of one-loop corrections to any scattering amplitudes within the dimensional-regularization scheme. It is based on the decomposition of the integrand accord...
