Particle nature in model file

yes

olivier

> On 2 Apr 2024, at 19:05, Sebastian Urrutia-Quiroga <email address hidden> wrote:
>
> New question #711232 on MadGraph5_aMC@NLO:
> https://answers.launchpad.net/mg5amcnlo/+question/711232
>
> Hi,
> I am analyzing the UFO files generated by a FeynRules model with Majorana right-handed neutrinos (https://feynrules.irmp.ucl.ac.be/wiki/HeavyN), and there is something I am not totally sure about regarding the `particles.py` file:
>
> ...
> e = Particle(pdg_code = 12,
> name = 've',
> antiname = 've~',
> spin = 2,
> color = 1,
> mass = Param.ZERO,
> width = Param.ZERO,
> texname = 've',
> antitexname = 've~',
> charge = 0,
> GhostNumber = 0,
> LeptonNumber = 1,
> Y = 0)
>
> ve__tilde__ = ve.anti()
> ...
>
> ...
> N1 = Particle(pdg_code = 9900012,
> name = 'N1',
> antiname = 'N1',
> spin = 2,
> color = 1,
> mass = Param.mN1,
> width = Param.WN1,
> texname = 'N1',
> antitexname = 'N1',
> charge = 0,
> GhostNumber = 0,
> LeptonNumber = 0,
> Y = 0)
> ...
>
> Does it mean that in this implementation N1 is its own antiparticle (Majorana fermion), but ve is still a Dirac fermion? Thanks for the clarification.
>
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