On the maximal use of Monte Carlo samples: re-weighting events at NLO accuracy.
Accurate Monte Carlo simulations for high-energy events at CERN's Large Hadron Collider, are very expensive, both from the computing and storage points of view. We describe a method that allows to consistently re-use parton-level samples accurate up to NLO in QCD under different theoretical hypotheses. We implement it in MadGraph5_aMC@NLO and show its validation by applying it to several cases of practical interest for the search of new physics at the LHC.
Institute for Particle Physics Phenomenology (IPPP), Durham University, South Road 1, Durham, DH1 3LF England.
Olivier
O
Mattelaer