Speaker
Giulio Gambuti
Description
I will describe the methods used for the first computation of three-loop QCD scattering amplitudes involving four external massless partons in full color complexity. These calculations require careful management of color structures and, more importantly, of the large numbers of Feynman integrals induced by the Feynman rules of the theory. The resulting amplitudes result allowed a direct confirmation of the quadrupole radiation contribution to the infrared structure of QCD as well as the first computation of the three-loop QCD gluon Regge trajectory.
Authors
Giulio Gambuti
Giulio Gambuti
Giulio Gambuti
(University of Oxford)
