7 papers
Two-Loop Rational Terms in Yang-Mills Theories
Jean-Nicolas Lang, Stefano Pozzorini, Hantian Zhang +1
Scattering amplitudes in dimensions involve particular terms that originate from the interplay of UV poles with the dimensional parts of loop numerators. Such contributio…
Rational terms in two-loop calculations
Stefano Pozzorini, Hantian Zhang, Max F. Zoller
We present an extension of the renormalisation procedure based on the R-operation in dimensions at two-loop level, in which the numerators of all Feynman diagrams can be constr…
Rational Terms of UV Origin at Two Loops
Stefano Pozzorini, Hantian Zhang, Max F. Zoller
The advent of efficient numerical algorithms for the construction of one-loop amplitudes has played a crucial role in the automation of NLO calculations, and the development of sim…
NLO QCD predictions for production in association with a light jet at the LHC
Federico Buccioni, Stefan Kallweit, Stefano Pozzorini +1
Theoretical predictions for ttbb production are of crucial importance for ttH measurements in the H->bb channel at the LHC. To address the large uncertainties associated with the m…
OpenLoops 2
Federico Buccioni, Jean-Nicolas Lang, Jonas M. Lindert +4
We present the new version of OpenLoops, an automated generator of tree and one-loop scattering amplitudes based on the open-loop recursion. One main novelty of OpenLoops 2 is the…
On-the-fly reduction of open loops
Federico Buccioni, Jean-Nicolas Lang, Stefano Pozzorini +2
We describe new developments in the OpenLoops framework based on the recently introduced on-the-fly method. The on-the-fly approach exploits the factorisation of one-loop diagrams…