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

  • Keith Hamilton
Article

Abstract

In this article we describe simulations of ZZ, W ± Z and W + W production based on the positive weight next-to-leading-order (NLO) 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 \( \mathcal{O}\left( {{\alpha_\mathcal{S}}} \right) \), 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.

Keywords

Jets NLO Computations Hadronic Colliders 

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Copyright information

© SISSA, Trieste, Italy 2011

Authors and Affiliations

  1. 1.INFN, Sezione di Milano-BicoccaMilanItaly

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