MadGraph5_aMC@NLO

  1. Bug #744236
  2. Comment #4

Comment 4 for bug 744236

Revision history for this message
Olivier Mattelaer (olivier-mattelaer) wrote : Re: Error in MG5 QED process output

Hi,

Thanks for the bug report.

Concerning the p p > e1p+ e1p-.
It should be a problem with the expression inside the FFS4 structure which is not recognize by the ALOHA program.
It seems to me that your expression of FFS4 is not complete.
The easiest might be that you join the model in attachment such that, I can test this on my computer.

Concerning the
g g > t t~ t t~
I already face this problem in a UFO model. The point is that all particle should be in the 3 representation of SU(3) and all anti-particle should be in -3 representation of SU(3). If this is not done correctly, this creates some un-realistic color flow.

Could you check this point on your model?

Olivier