Estimating cross-section of QCD multijet and W/Z pair production
Hello,
I am hoping to generate the cross-sections of QCD multijet events and W/Z pair production. I was wondering if this would be possible with Madgraph5?
What I have in mind is to look at background events for an all hadronic ttbar so it would be something like
p p > j j > j j j j j j
for QCD and
p p > j j > w-w+ (z z or w z) > j j j j j j
for W/Z pair
I have ran the ttbar cross-section at NLO without any problems p p > t t~ > j j j j j j [QCD] but when trying the QCD multijet (as written above) it resulted in this error after running for a while:
Command "generate p p > j j > j j j j j j" interrupted with error:
NoDiagramException : No amplitudes generated from process Process: g/u/c/d/
Thank you so much.
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