SMEFT@NLO squared order problem in mG5
Hi, I want to calculate four-fermion operators contribution to top pair production like the table1 in 2008.11743v2.i do this madGraph :
import model SMEFRatNLO-LO
generate p p > t t~ QED=0 QCD=2 NP=2 NP^2==2 ,
it gives me the same value in paper at linear levels at LO, but for NLO calculation i ran into error when i enter this command :
import model SMEFTatNLO-NLO
generate p p > t t~ QCD=2 QED=0 NP=2 NP^2==2 [QCD]
the error is :
Error detected in "generate p p > t t~ QCD=2 QED=0 NP=2 NP^2==2 [QCD]"
write debug file MG5_debug
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str : The squared-order constraints passed are not '<='.
Other kind of squared-order constraints are not supported at NLO
Thank you
Eli Dorri
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- Eleni Vryonidou Edit question
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