3 papers
hep-ph2026
Three-loop helicity amplitudes of four-lepton scattering in QED
Giulio Crisanti, Thomas Dave, Pierpaolo Mastrolia +3
We present the analytic expressions of the three-loop virtual corrections to the helicity amplitudes of 2 -> 2 four-fermion scattering processes in massless QED. The contributing F…
hep-ph2025
Renormalization of effective field theories via on-shell methods: the case of axion-like particles
Luigi C. Bresciani, Giacomo Brunello, Gabriele Levati +2
We consider the most general axion-like particle effective field theory, including both CP-odd and CP-even types of interactions, and evaluate the corresponding renormalization gro…
hep-ph2024
Anomalous Dimensions via on-shell Methods: Operator Mixing and Leading Mass Effects
L. C. Bresciani, G. Levati, P. Mastrolia +1
We elaborate on the application of on-shell and unitarity-based methods for evaluating renormalization group coefficients, and generalize this framework to account for the mixing o…