MadGraph5_aMC@NLO

Issue with particle names in vertices.py when writing UFO files from FeynRules

Asked by sylvain fichet

Dear MadGraph team,

I am trying to generate the UFO files of the SM from Feynrules. (Loading the SM file and using WriteUFO[LSM] in Mathematica)
Everything goes fine except that some particle names do not get correctly translated in the vertices.py file.
These are names for unphysical particles defined in the standard SM FR file.
One gets for example

V_18 = Vertex(name = 'V_18',
              particles = [ P.<>CreateObjectParticleName[PartNameMG[Wi]], P.<>CreateObjectParticleName[PartNameMG[Wi]], P.phi ],
              color = [ '1' ],
              lorentz = [ L.VVS2 ],
              couplings = {(0,0):C.GC_82})

V_58 = Vertex(name = 'V_58',
              particles = [ P.<>CreateObjectParticleName[PartNameMG[LLbar]], P.e__minus__, P.G__plus__ ],
              color = [ '1' ],
              lorentz = [ L.FFS1 ],
              couplings = {(0,0):C.GC_46})

Note I am using the last version of FeynRules (v2.3). Any idea how to fix this issue ?

Thanks in advance, cheers
Sylvain

Question information

Language:
English Edit question
Status:
Answered
For:
MadGraph5_aMC@NLO Edit question
Assignee:
No assignee Edit question
Last query:
Last reply:
Revision history for this message
Olivier Mattelaer (olivier-mattelaer) said : 		#1

Dear Sylvain,

Please contact the FeynRules author:
https://feynrules.irmp.ucl.ac.be/newticket

Cheers,

Olivier

On 20 Jun 2015, at 09:01, bixiga <email address hidden> wrote:

> New question #268357 on MadGraph5_aMC@NLO:
> https://answers.launchpad.net/mg5amcnlo/+question/268357
>
> Dear MadGraph team,
>
> I am trying to generate the UFO files of the SM from Feynrules. (Loading the SM file and using WriteUFO[LSM] in Mathematica)
> Everything goes fine except that some particle names do not get correctly translated in the vertices.py file.
> These are names for unphysical particles defined in the standard SM FR file.
> One gets for example
>
> V_18 = Vertex(name = 'V_18',
> particles = [ P.<>CreateObjectParticleName[PartNameMG[Wi]], P.<>CreateObjectParticleName[PartNameMG[Wi]], P.phi ],
> color = [ '1' ],
> lorentz = [ L.VVS2 ],
> couplings = {(0,0):C.GC_82})
>
> V_58 = Vertex(name = 'V_58',
> particles = [ P.<>CreateObjectParticleName[PartNameMG[LLbar]], P.e__minus__, P.G__plus__ ],
> color = [ '1' ],
> lorentz = [ L.FFS1 ],
> couplings = {(0,0):C.GC_46})
>
> Note I am using the last version of FeynRules (v2.3). Any idea how to fix this issue ?
>
> Thanks in advance, cheers
> Sylvain
>
>
>
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.

Can you help with this problem?

Provide an answer of your own, or ask sylvain fichet for more information if necessary.

To post a message you must log in.