Problem with outputting to pythia8
Hi,
I've been trying to use MadGraph5 (v 1.4.8.4) with Pythia8 (8.1) to do some LHC SUSY searches. I seem to run into problems when I try to output to Pythia8:
mg5>output pythia8
Command "output pythia8 " interrupted in sub-command:
"output pythia8" with error:
InvalidCmd : Pythia 8 cannot handle incoming flavors set([(-6, 6)])
Here the processes that were generated are q qbar > go go ; with q q being a multiparticle label for quarks (qbar for antiquarks), and go - gluinos. Any help here would be greatly appreciated.
On another note, I'm new to the physics of parton events, showers, and so on, and don't quite understand the difference between how MadEvent and Pythia handle these. If anyone could suggest a good reference(other than the Pythia8 manual), that would be great. Essentially I'm trying to understand the difference between generating events using madgraph's pythia8 output directly, and what happens if I run it through MadEvent and submit a LHE file to Pythia instead.
Thanks!
Phil
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- Johan Alwall
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