Perturbative QCD at NNLO and N3LO: recent progress in antenna subtraction
by
Sala Wataghin
Vecchio Edificio
In this talk, I will briefly review the state of the art of fixed-order calculations in QCD and present recent developments in the context of the antenna subtraction method. In particular, I will highlight progress aimed at automation and computational efficiency at NNLO, especially for high-multiplicity processes. I will introduce generalized antenna functions for final-state radiation and discuss their phenomenological applications for the calculation of the NNLO correction to four-jet production at electron-positron colliders. I will also present the first N3LO differential calculation performed entirely using antenna subtraction for jet production at electron–positron colliders, and discuss how the extension of generalized antenna functions at N3LO will enable to tackle of more complex processes at this perturbative order.