Systematic uncertainties in NLOPS matching
  The MC@NLO and MEPS@NLO methods, as implemented in the Monte-Carlo event generator framework Sherpa, are used to estimate the perturbative and non-perturbative uncertainties in various processes such as dijet production and the production of a W boson in association with (multiple) jets. 
Marek Schonherr, Stefan Hoeche, Frank Krauss, Frank Siegert
hep-ph