5 papers
Two-loop all-plus helicity amplitudes for self-dual Higgs boson with gluons via unitarity cut constraints
Simon Badger, Christian Biello, Colomba Brancaccio +1
We present the two-loop amplitudes for a self-dual Higgs boson with up to four positive helicity gluons in the heavy top-quark limit. Because the tree amplitudes in the all-plus se…
Double virtual QCD corrections to jet production at the LHC
Simon Badger, Matteo Becchetti, Colomba Brancaccio +4
We present a leading colour computation of the double virtual contributions to top-quark pair production in association with a jet at a hadron collider at next-to-next-to-leading o…
Higher-order QCD corrections to top-quark pair production in association with a jet
Simon Badger, Matteo Becchetti, Colomba Brancaccio +4
The production of a top-quark pair, the heaviest known elementary particle, in association with a light jet is a key process for studying the properties of the Standard Model of Pa…
Scattering Amplitudes in Quantum Field Theory
Simon Badger, Johannes Henn, Jan Plefka +1
These lecture notes bridge a gap between introductory quantum field theory (QFT) courses and state-of-the-art research in scattering amplitudes. They cover the path from basic defi…
Numerical evaluation of two-loop QCD helicity amplitudes for at leading colour
Simon Badger, Matteo Becchetti, Colomba Brancaccio +2
We present the first benchmark evaluation of the two-loop finite remainders for the production of a top-quark pair in association with a jet at hadron colliders in the gluon channe…