% !TEX program = pdflatexmk
% !TEX parameter = -shell-escape
% Author: Izaak Neutelings (October 24)
% Instructions: To compile via command line, run the following twice
%   pdflatex -shell-escape extract/higgs_pp$TAG.tex
\documentclass[11pt,border=4pt]{standalone}
\usepackage{feynmp-auto}
\usepackage{xcolor}
\definecolor{colqqH}{rgb}{.8,.1,.9} % Higgs with associated quarks (magenta)
\definecolor{colkappaf}{rgb}{1,0,0} % kappa_q (red)
\begin{document}
\begin{fmffile}{feyngraph}
  \fmfframe(-4,10)(4,12){ % padding (L,T)(R,B)
  %\color{colqqH} % magenta text color
  %\fmfcmd{foreground:=(.9,.1,.9);} % magenta line color
  \begin{fmfgraph*}(115,60) % dimensions (WH)
    % line style
    \fmfset{wiggly_len}{12} % boson wavelength
    \fmfset{wiggly_slope}{65} % boson slope of waves
    % external vertices
    \fmfleft{i2,i1}
    \fmfright{o2,o1}
    \fmfforce{(1.00w,.45h)}{h} % exact placement
    \fmfforce{(0.96w,-.04h)}{o2} % exact placement
    % internal vertices (exact placement)
    \fmfforce{(.42w,.85h)}{v1} % exact placement
    \fmfforce{(.42w,.18h)}{v2} % exact placement
    \fmfforce{(.70w,.18h)}{v3} % exact placement
    % main
    \fmf{fermion}{i1,v1,o1}
    \fmf{fermion}{i2,v2,v3,o2}
    \fmf{boson,l.s=right,label=$V$}{v1,v2} % t-channel
    % Higgs strahlung
    \fmf{dashes}{v3,h} % Higgs
    % Higss coupling
    \fmfv{decor.shape=circle,decor.filled=full,decor.size=4,f=(1,,0,,0),
          l.d=5,l.a=-112,l=\color{colkappaf}$\kappa_{q}$}{v3}
    % labels
    \fmfv{l.a=158,l.d=6,l=$q$}{i1}
    \fmfv{l.a=-158,l.d=6,l=$q'$}{i2}
    \fmfv{l.a=22,l.d=6,l=$q$}{o1}
    \fmfv{l.a=-22,l.d=6,l=$q'$}{o2}
    \fmfv{l.a=28,l.d=2,l=h}{h}
  \end{fmfgraph*}
  } % close \fmfframe
\end{fmffile}
\end{document}