Two-loop form factors for diphoton production in quark annihilation channel with heavy quark mass dependence
Matteo Becchetti, Roberto Bonciani, Leandro Cieri, Federico Coro, Federico Ripani
Abstract
A bstract We present the computation of the two-loop form factors for diphoton production in the quark annihilation channel. These quantities are relevant for the NNLO QCD corrections to diphoton production at LHC recently presented in [1]. The computation is performed retaining full dependence on the mass of the heavy quark in the loops. The master integrals are evaluated by means of differential equations which are solved exploiting the generalised power series technique.
Topics & Concepts
PhysicsParticle physicsAnnihilationLarge Hadron ColliderQuarkQuantum chromodynamicsTop quarkLoop (graph theory)Nuclear physicsComputationProduction (economics)MacroeconomicsEconomicsComputer scienceMathematicsCombinatoricsAlgorithmParticle physics theoretical and experimental studiesQuantum Chromodynamics and Particle InteractionsHigh-Energy Particle Collisions Research