I'm trying to draw a gg->ttZ Feynman diagram using the TikZ-Fenyman package, and so far here's what I have:
\documentclass[12pt]{article}
\usepackage{tikz}
\usepackage[compat=1.1.0]{tikz-feynman}
\begin{document}
\feynmandiagram[medium, layered layout, vertical=a to c] {
g1 [particle=\(g\)] -- [gluon] a -- [fermion] b [particle=\(t\)],
{ [same layer] c -- [fermion, edge label=\(t\)] e -- [fermion, edge label=\(t\)] a},
e -- [photon, edge label=\(Z\)] f,
g [particle=\(\nu\)] -- [anti fermion] f -- [anti fermion] h [particle=\(\bar{\nu}\)],
g2 [particle=\(g\)] -- [gluon] c -- [anti fermion] d [particle=\(\bar{t}\)],
};
\end{document}
How can I do the following:
- have the external neutrinos and tops lined up?
- have the Z correctly splitting in a pair of neutrinos?
- (extra) make the diagram a bit more compact by reducing the length of the internal top propagators?
\phantom{g}
or\vphantom{g}
around the t node to raise the baseline. Does your second bullet point mean you want them coming out at the same angles?