5 papers
Integrand Analysis, Leading Singularities and Canonical Bases beyond Polylogarithms
Felix Forner, Cesare Carlo Mella, Christoph Nega +2
In this paper, we elaborate on the connection between leading singularities and canonical bases of Feynman integrals beyond polylogarithms. We start by discussing a notion of leadi…
On the photon self-energy to three loops in QED
Felix Forner, Christoph Nega, Lorenzo Tancredi
We compute the photon self-energy to three loops in Quantum Electrodynamics. The method of differential equations for Feynman integrals and a complete -factorization of the for…
Two-Loop Master Integrals for Mixed QCD-EW Corrections to Through
Robin Marzucca, Andrew J. McLeod, Christoph Nega
We consider mixed strong-electroweak corrections to Higgs production via gluon fusion, in which the Higgs boson couples to the top quark. Using the method of differential equations…
Analytic two-loop amplitudes for di-jet and jet production mediated by a heavy-quark loop
Federico Coro, Christoph Nega, Lorenzo Tancredi +1
In this paper, we present analytical results for the two-loop QCD corrections to the production of two partons or a photon and a parton in hadronic collisions, mediated by loops of…
Analytic two-loop amplitudes for and mediated by a heavy-quark loop
Matteo Becchetti, Federico Coro, Christoph Nega +2
We address the analytic computation of the two-loop scattering amplitudes for the production of two photons in parton-parton scattering, mediated by loops of heavy quarks. Due to t…