I would like to calculate $pp \rightarrow W (\rightarrow \ell \nu)$ + n-jets (n=2, maybe also 3) at NLO, with some cuts and plot some distributions.

I used MadGraph extensively for LO processes and I was wondering how reliable it is at NLO? Does anyone know any reference comparing multiple NLO codes? I have tried MCFM and I am not very experienced with it but the calculation seems to take a lot of time (obviously since it's NLO). Is there a way to make it run in parallel? I know that you can separate the real emission and virtual parts and then combine them later, but that doesn't seem to give a huge speed increase. Any help is appreciated. Thanks.

This post imported from StackExchange Physics at 2014-04-23 15:14 (UCT), posted by SE-user henry mcfly