Double plain line?

[amoutenet]

Hello,

I am willing to use a double plain line in a Feynman diagram, but in https://jpellis.me/projects/tikz-feynman/tikz-feynman/tikz-feynman.pdf I didn't find a way to do it easily. See for example table 1 dbl_plain of http://www.pd.infn.it/TeX/doc/latex/feynmf/manual.pdf

Did I miss something?
Thanks a lot!

[JP-Ellis]

This is somewhat related to #27 which I will be adding soon. The main issue is that it is difficult to have the doubled lines join nicely at vertices.

[zhyiyu]

I think usually only one line would meet with some other particle at the vertex. Because double lines or triple lines are often used for mesons or protons, where only one of the partons interacts.

[Turgon-Aran-Gondolin]

I think usually only one line would meet with some other particle at the vertex. Because double lines or triple lines are often used for mesons or protons, where only one of the partons interacts.

I think you are mistaken. Double line usually stands for gauge link propagators or HQET propagators. In some graphs you see double line or triple line where each line stands for a valance quark, but they are often more separated. Most of the time I don't care which line will meet the vertex, as long as it serves its purpose. What the author of this issue wants is simple to achieve: [double Distance = (number) pt, (propagator type)].

[zhyiyu]

What about triple lines? Do you have any idea?

[zhyiyu]

@Turgon-Aran-Gondolin

Also I think it is [double distance = (number) pt, (propagator type)] with lower case.