Towards NNLO+PS Matching with Sector Showers

Abstract

We outline a new technique for the fully-differential matching of final-state parton showers to NNLO calculations, focussing here on the simplest case of leptonic collisions with two final-state jets. The strategy is facilitated by working in the antenna formalism, making use of NNLO antenna subtraction on the fixed-order side and the sector-antenna framework on the shower side. As long as the combined real-virtual and double-real corrections do not overcompensate the real-emission term in the three-jet region, negative weights can be eliminated from the matching scheme. We describe the implementation of all necessary components in the VINCIA antenna shower in PYTHIA 8.3.

Version submitted to PLB

References in corpus (16)

• An Introduction to PYTHIA 8.2
• Event generation with SHERPA 1.1
• Drell-Yan lepton pair production at NNLO QCD with parton showers
• Higgs-boson production through gluon fusion at NNLO QCD with parton showers
• Automating the POWHEG method in Sherpa
• NNLOPS accurate Drell-Yan production
• Next-to-next-to-leading order event generation for top-quark pair production
• $ZZ$ production at nNNLO+PS with MiNNLO${}_{\text{PS}}$
• NNLO corrections to 2-jet observables in electron-positron annihilation
• $W^{+}{W}^{-}$ production at NNLO+PS with MiNNLO${}_{\mathrm{PS}}$
• Accelerating LHC phenomenology with analytic one-loop amplitudes: A C++ interface to MCFM
• Combining states without scale hierarchies with ordered parton showers
• Matching N3LO QCD calculations to parton showers
• Hadronic decays of Higgs boson at NNLO matched with parton shower
• A Forward Branching Phase-Space Generator
• MiNNLO${}_{\mathrm{PS}}$: a new method to match NNLO QCD with parton showers

Cited by in corpus (15)

• Event Generators for High-Energy Physics Experiments
• Parton showering with higher-logarithmic accuracy for soft emissions
• Next-to-leading-logarithmic PanScales showers for Deep Inelastic Scattering and Vector Boson Fusion
• A new approach to QCD final-state evolution in processes with massive partons
• A general algorithm to build real-radiation antenna functions for higher-order calculations
• A general algorithm to build mixed real and virtual antenna functions for higher-order calculations
• NNLO+PS Monte Carlo simulation of photon pair production with MiNNLOPS
• Double Higgs production at NNLO interfaced to parton showers in GENEVA
• Initial-Final and Initial-Initial antenna functions for real radiation at next-to-leading order
• Refining the GENEVA method for Higgs boson production via gluon fusion
• Logarithmically-accurate and positive-definite NLO shower matching
• A parton shower generator based on the GLR equation
• Measurements of Lund subjet multiplicities in 13 TeV proton-proton collisions with the ATLAS detector
• Sudakov evolution without unitarity
• Monte Carlo Event Generators for Future Lepton Colliders