reweight crashes on loop-induced processes
Bug #2008544 reported by
Samuel Homiller
This bug affects 3 people
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
MadGraph5_aMC@NLO |
New
|
Undecided
|
Unassigned |
Bug Description
Dear MG5 team,
I am attempting to use the reweighting feature on a loop-induced process (Higgs-pair production via gluon fusion). For a simple example, I tried
import model loop_sm
generate g g > h h QED^2<=4 QCD^2<=4 [QCD]
and in the reweight card, following the example in http://
change process g g > h h QED^2<=4 QCD^2<=4 [virt=QCD]
launch
set yukawa 6 120
(I also tried without the change process line).
This gives an AttributeError "'int' object has no attribute 'decode'. I attached the debug.log file below, in case this is useful.
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Hi,
This sounds an error introduces by the migration to python3.
So I would suggest checking the Long Term Stable version (2.9.x) of MG5aMC which can still run python2.
I will see what I can do as soon as possible to fix the issue.