Add aMcAtNlo decfile for Wmunu production at NLO
Add a decfile to do aMC@NLO W > mu nu
Follows directly from !1339 (closed)
Dependent on MadgraphData!22 (merged)
Add a decfile to do aMC@NLO W > mu nu
Follows directly from !1339 (closed)
Dependent on MadgraphData!22 (merged)