Comment 11 for bug 1829266

Hi,

Did you have your gluon coupling to ANY quark?
This error means that you still have issue in your model.

Cheers,

Olivier

> On 20 May 2019, at 20:50, mehdirahmani <email address hidden> wrote:
>
> Hi again Oliver,
>
> So I included an appropriate lagrangian for uplike uplike g vertex, now when I do "display interactions u u~ g" in MadGraph, I get:
> {
> 'id': 3,
> 'particles': [-2,2,21],
> 'color': [1 T(2,1,0)],
> 'lorentz': ['FFV1'],
> 'couplings': {(0, 0): 'GC_1'},
> 'orders': {'QCD': 1},
> 'loop_particles': None,
> 'type': 'base',
> 'perturbation_type': None
> }
>
> Is this correct now?
>
>
> Then I went on and produced 10 events and tried to simulate cms on them. Now I think it works for 7 out of 10 events but it still gives me errors about 3 events: 3 Error in ProcessLevel::checkColours: incorrect colour assignment
> but the final cross section after filter is not zero anymore. I have attached the output of cmsRun named errors_1.
> Do you have further suggestions to solve this?
>
> ** Attachment added: "errors_1.txt"
> https://bugs.launchpad.net/mg5amcnlo/+bug/1829266/+attachment/5265121/+files/errors_1.txt
>
> --
> You received this bug notification because you are subscribed to
> MadGraph5_aMC@NLO.
> https://bugs.launchpad.net/bugs/1829266
>
> Title:
> PYTHIA Error in ProcessLevel::checkColours: incorrect colour
> assignment
>
> Status in MadGraph5_aMC@NLO:
> Invalid
>
> Bug description:
> Hi Oliver,
> /
> Here is the bug report for the question #680841.
>
> Attached is the lhe file of my events produced by MadGraph. Let me know if you need a description of my model and my model file. Here is the process:
> generate p p > ZD, (ZD > SD SD~, SD > mu+ mu-, SD~ > mu+ mu-)
>
> where ZD is a dark Z and SD is a dark scalar.
>
> Thanks,
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/mg5amcnlo/+bug/1829266/+subscriptions