Virtual QCD corrections to gluon-initiated diphoton plus jet production at hadron colliders
Simon Badger, Christian Brønnum-Hansen, Dmitry Chicherin, T. Gehrmann, Heribertus Bayu Hartanto, Johannes M. Henn, Matteo Marcoli, Ryan Moodie, Tiziano Peraro, Simone Zoia
2021Archivio istituzionale della ricerca (Alma Mater Studiorum Università di Bologna)77 citationsDOIOpen Access PDF
Abstract
We present an analytic computation of the gluon-initiated contribution to diphoton plus jet production at hadron colliders up to two loops in QCD. We reconstruct the analytic form of the finite remainders from numerical evaluations over finite fields including all colour contributions. Compact expressions are found using the pentagon function basis. We provide a fast and stable implementation for the colour- and helicity-summed interference between the one-loop and two-loop finite remainders in C++ as part of the NJet library.
Topics & Concepts
PhysicsGluonQuantum chromodynamicsHelicityParticle physicsJet (fluid)HadronComputationLoop (graph theory)Production (economics)Function (biology)Large Hadron ColliderComputer scienceMathematicsAlgorithmCombinatoricsEvolutionary biologyEconomicsBiologyThermodynamicsMacroeconomicsParticle physics theoretical and experimental studiesHigh-Energy Particle Collisions ResearchQuantum Chromodynamics and Particle Interactions