HOw MadGraph assigns the order (QED/QCD/...) automatically?
Asked by
Olivier Mattelaer
(receive from email from Josh McFayden)
We were wondering if you could clarify a point for us regarding how different processes that contribute to the same final state are selected in madgraph.
For example when generating p p > W b b~ j j we do not see any diagrams containing t t~ even though both the t t~ and W+jets processes can have this same final state.
Given that no restrictions are applied to the numbers of QCD and QED couplings how does madgraph choose which diagrams to generate which to omit?
Thanks in advance,
Josh and Kerim.
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