0

Hello i am trying to make a Feynman diagram with this code

\bigskip
\begin{figure}[H]
\centering
\tikzfeynmanset{
every vertex={red, dot},
every particle={blue},
every blob={draw=green!40!black, pattern color=green!40!black},
}
\feynmandiagram [horizontal=a to b] {
a [particle={\(\gamma, Z\)}] -- [fermion] b [blob],
c -- [fermion] b -- [fermion] d,
};,
\caption{\label{fig:firstmesonimag} A $\pi^0$ decaying onto two gammas.}
\end{figure}

and i am getting something like this

and i want to make something like this

enter image description here

Can anyone help how to get the double fermion horizontally along with the incoming nucleus?

Any help will greatly appreciated.

Thanks!

1 Answer 1

3
\documentclass{article}
\usepackage{amsmath}
\usepackage{tikz-feynman}
\begin{document}

\begin{tikzpicture}
  \feynmandiagram [horizontal=a to d] {
    a -- [fermion,edge label=$N$] b [dot] -- [double,with arrow=0.5,edge label=$\mathcal{R}$] c -- [fermion,edge label=$N'$] d,
    i -- [charged boson,edge label=$W^i$] b,
    c -- [charged scalar,edge label=$\pi$] o,
  };
\end{tikzpicture}

\end{document}

enter image description here

3
  • Thanks Henri Menke! that was quite a useful solution. Greatly appreciated!
    – user665997
    Commented Apr 3, 2018 at 2:31
  • I was also wondering how would you also include label on the vertices? if that's possible.
    – user665997
    Commented Apr 3, 2018 at 2:38
  • 1
    @spacecatbro That can be easily achieved by reading the manual (PDF). Commented Apr 3, 2018 at 5:42

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .