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 want to make something like this
Can anyone help how to get the double fermion horizontally along with the incoming nucleus?
Any help will greatly appreciated.
Thanks!