A positive-weight next-to-leading order simulation of weak boson pair production

Abstract

In this article we describe simulations of ZZ, WZ and WW production based on the positive weight next-to-leading-order matching scheme, Powheg, in the Herwig++ event generator. Building on earlier efforts within the Herwig++ framework, the simulation includes a full description of truncated showering effects, required to correctly model soft, wide angle, emissions in angular-ordered parton showers. We utilize simple relations among each of the diboson cross sections, holding to order alpha_S, in constructing the simulation. Spin correlation effects are also included in the decays of the vector bosons at the tree order. A large part of this work is concerned with a full and thorough validation of the simulations through comparisons with alternative methods and calculations.

32 pages, 9 figures; v2 references added; v3 commented on singly resonant contributions and damping factors

References in corpus (15)

• PYTHIA 6.4 Physics and Manual
• Matching NLO QCD computations with Parton Shower simulations: the POWHEG method
• Herwig++ Physics and Manual
• Single-top hadroproduction in association with a W boson
• NLO vector-boson production matched with shower in POWHEG
• Automation of next-to-leading order computations in QCD: the FKS subtraction
• Next-to-Leading order Higgs + 2 jet production via gluon fusion
• A modified CKKW matrix element merging approach to angular-ordered parton showers
• A Positive-Weight Next-to-Leading-Order Monte Carlo for Z Pair Hadroproduction
• A Positive-Weight Next-to-Leading Order Monte Carlo Simulation of Drell-Yan Vector Boson Production
• A Positive-Weight Next-to-Leading Order Monte Carlo Simulation for Higgs Boson Production
• Inclusive Search for Standard Model Higgs Boson Production in the WW Decay Channel using the CDF II Detector
• First Observation of Vector Boson Pairs in a Hadronic Final State at the Tevatron Collider
• Observation of ZZ production in ppbar collisions at sqrt(s) = 1.96 TeV
• Higher-order QCD effects in the Higgs to ZZ search channel at the LHC

Cited by in corpus (11)

• Next-to-leading-order electroweak corrections to the production of four charged leptons at the LHC
• An Explanation of the WW Excess at the LHC by Jet-Veto Resummation
• Two-loop helicity amplitudes for the production of two off-shell electroweak bosons in quark-antiquark collisions
• Vector-Boson Scattering at the LHC: unravelling the Electroweak sector
• $W^{+}{W}^{-}$ production at NNLO+PS with MiNNLO${}_{\mathrm{PS}}$
• Next-to-leading-order electroweak corrections to the production of three charged leptons plus missing energy at the LHC
• New Physics backgrounds to the H -> WW search at the LHC?
• Merging WW and WW+jet with MINLO
• Studying the sensitivity of monotop probes to compressed supersymmetric scenarios at the LHC
• NNLO QCD corrections to $pp\to {\gamma }^{\ast }{\gamma }^{\ast }$ in the large $N_F$ limit
• KrkNLO matching for colour-singlet processes