A Positive-Weight Next-to-Leading Order Monte Carlo Simulation for Higgs Boson Production
arXiv:0903.4345 · doi:10.1088/1126-6708/2009/04/116
Abstract
In this article we describe simulations of Higgs boson production via the gluon fusion and Higgs-strahlung processes, using the positive weight next-to-leading-order (NLO) matching scheme, POWHEG, in the Herwig++ 2.3 event generator. This formalism consistently incorporates the full NLO corrections to these processes within the parton shower simulation, without the production of negative weight events. These simulations include a full implementation of the truncated shower required to correctly model soft emissions in an angular-ordered parton shower. We present a thorough validation of these simulations, comparing them to other methods and calculations. The results obtained for the gluon fusion process corroborate, and provide detailed explanations for, findings reported by Alioli et al (arXiv:0812.0578) using an independent POWHEG simulation, neglecting truncated shower effects, released at the same time as our code.
43 pages. Citations added and Tevatron limits updated (JHEP version)
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Cited by in corpus (9)
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- Search for invisible decays of Higgs bosons in the vector boson fusion and associated ZH production modes
- Drell-Yan lepton pair production at NNLO QCD with parton showers
- Automating the POWHEG method in Sherpa
- A modified CKKW matrix element merging approach to angular-ordered parton showers
- NLO QCD+EW predictions for HV and HV+jet production including parton-shower effects
- The POWHEG-BOX
- A positive-weight next-to-leading order simulation of weak boson pair production
- Implications of QCD radiative corrections on high-pT Higgs searches