Fully exclusive heavy quark-antiquark pair production from a colourless initial state at NNLO in QCD
G. Somogyi, Francesco Tramontano
Abstract
A bstract We present a local subtraction scheme for computing next-to-next-to-leading order QCD corrections to the production of a massive quark-antiquark pair from a colourless initial state. The subtraction terms are built following the CoLoRFulNNLO method and refined in such a way that their integration gives rise to compact, fully analytic expressions. All ingredients necessary for a numerical implementation of our subtraction scheme are provided in detail. As an example, we calculate the fully differential decay rate of the Standard Model Higgs boson to massive bottom quarks at next-to-next-to-leading order accuracy in perturbative QCD.
Topics & Concepts
Quantum chromodynamicsPhysicsParticle physicsSubtractionHiggs bosonQuarkPerturbative QCDProduction (economics)Order (exchange)Pair productionScheme (mathematics)State (computer science)Differential (mechanical device)AlgorithmComputer scienceMathematicsMathematical analysisArithmeticFinanceThermodynamicsMacroeconomicsEconomicsParticle physics theoretical and experimental studiesQuantum Chromodynamics and Particle InteractionsHigh-Energy Particle Collisions Research