About matching in MG5
Hello
I caculated the cross section of process pp>zj, z>l+l- in parton level (ickkw=0,xqcut=0). Then I want to perform detector simulation with pythia-pgs/pythis delphes. I find these questions:
1. I write process pp>zj,z>l+l- in proc_card.dat. Then I set ickkw=1,xqcut=15 in run_card.dat. There are other parameters at default in pythia_card.dat and pgs_card.dat. When the MG5 is performed, the error appeared:
Command "generate_events " interrupted in sub-command:
2. I set ickkw=0 xqcut=15. I found that the cross section is not equal the result with xqcut=0.
I have read matching lectures in MG school, but I am still confused about matching. I just want to perform detector simulation for the process pp>zj,z>l+l-. What should I do about matching?
Thank you very much!
Cheers
Violin
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