decay chain with EWdim6 model
Dear all,
I wanted to generate events corresponding to the 5-points amplitude in Fig. 1 of PRL 123, 181801: A(bV -> tVV).
I.e., at LHC, for example,
pp -> W+W- t j
with the subsequent decay W+ > l+ vl (or others).
I have two questions:
1. how I force the five point amplitude correctly.
I tried with EWdim6 model to do
import model EWdim6
define p = p b b~
define j = p
generate p p > w+ w- t j / h z a NP==2
which does not exactly what I was looking for.
Sorry if this sounds trivial, but it's the first time I try to generate events myself.
2. how to force the decay of the w. In the SM everything works fine with the decay chain syntax, but when I require NP==2:
generate p p > w+ w- t j, (w+ > l+ vl), (w- > l- vl~) / h z a NP==2
I get this:
"MadGraph5Error : Decay processes cannot specify squared orders constraints."
I can still get this:
generate p p > l+ vl l- vl~ t j / h z a NP==2
However the decay chain would be really useful for other final states.
Thanks,
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- Solved by:
- Olivier Mattelaer
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