This page will teach you how to compile LaTeX code to produce images of Feynman diagrams with the feynmp package.

Compile standalone

For example:

documentclass[11pt,border=2pt]{standalone}
usepackage{feynmp-auto}
begin{document}
begin{fmffile}{feyngraph}
  begin{fmfgraph*}(90,60) % dimensions (WH)
    fmfleft{i2,i1}
    fmfright{o2,o1}
    fmf{fermion}{i2,v1,i1}
    fmf{boson}{v1,v2}
    fmf{fermion}{o2,v2,o1}
    fmfv{decor.shape=circle,decor.filled=full,decor.size=4,f=(0,,0,,0.6)}{v2}
  end{fmfgraph*}
end{fmffile}
end{document}

Compile on-the-fly as a figure

Please see this page.

Compile inside equations

Please see this page.

Compile standalone with LaTeXiT (macOS)

Please see this page by Taku Yamanaka.