madspin decaymode onshell (a bit urgent..)
Hi MadGraph team,
I again have questions about the use of spinmode onshell.
We are using Richard Ruiz's card in [1], "Heavy Neutrino"
With this we do the following command lines :
define mu = mu+ mu-
define e = e+ e-
define w = w+ w-
generate p p > n1 mu [QCD]
output HeavyNeutrinoTo
set spinmode onshell
decay n1 > mu j j
The last 2 lines are done in madspin.
With this, we expected to get same-sign and opposite sign dimuon events with 2 jets where the diagram looks like [2], since we generatlised muon charges by defining mu as mu+ and mu-.
However, it looks like this makes only OS dimuon events (if the muon from p p > is + charged, then muon from n1 > is - charged..).
Is it an attempt to make the lepton number conserved?
I would like to know if this issue could be solved somehow.
Thanks, Sihyun Jeon.
[1] http://
[2] https:/
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