Speaker
Piotr Bargiela
Description
In this talk, I will present a calculation of the three-loop massless QCD helicity amplitudes for diphoton production in gluon fusion, based on arXiv:2111.13595. I will argue that employing a recently proposed projector method reduces the amount of independent Lorentz tensor structures. I will also discuss the derivation of a complete set of Master Integrals in all the relevant physical regions. It is based on regularity properties of the underlying Feynman integrals, which were observed before. Finally, I will mention potential applications to LHC phenomenology.
Author
Piotr Bargiela
Co-authors
Fabrizio Caola
(University of Oxford (GB))
Andreas von Manteuffel
(Michigan State University)
Lorenzo Tancredi
(KIT Karlsruhe)
