Spikes in the POWHEG BOX dijet output

Origin of spikes: note

Comparison of the results with (red) and without (green) the doublefsr flag for the Les Houches events, at the LHC@7 TeV.

Comparison of the results with the doublefsr flag set with (red) and without (green) the modified scalup, at the LHC@7 TeV, showerd by PYTHIA, at parton level (i.e. no hadronization).