NLO matrix elements and truncated showers
In this publication, an algorithm is presented that combines the ME+PS approach to merge sequences of tree-level matrix elements into inclusive event samples [1] with the Powheg method, which combines exact next-to-leading order matrix element results with the parton shower It was developed in parallel to the MEnloPS technique discussed in [4] and has been implemented in the event generator Sherpa The benefits of this approach are exemplified by some first predictions for a number of processes, namely the production of jets in e + e --annihilation, in deep-inelastic ep scattering, in association with single W , Z or Higgs bosons, and with vector boson pairs at hadron colliders.