
%%%%%%%%%%%%%%%%%%%%%% Feynman diagram for TChiHZ

\documentclass[border={20pt 20pt 20pt 20pt}]{standalone}
\usepackage{feynmp}
\DeclareGraphicsRule{*}{mps}{*}{} % for being able to read the produced file



%%%%%%%%%%%%%%%%%%%%%%%%%%% Document %%%%%%%%%%%%%%%%%%%%%%%%%%%
\begin{document}
\thispagestyle{empty}

\Large
%%%%%%%% THE NAME OF THE fmffile HAS TO BE ``Feynman<filename>'' TO USE compile.py %%%%%%%%%%%%%%%
\begin{fmffile}{feyngraph}
  \begin{fmfgraph*}(250,100)
    \fmfleft{i1,i2}
    \fmfright{o1,o3,o2}

    % gluons
    \fmf{phantom}{i1,w1,o1}
    \fmf{phantom}{i2,w2,o2}
    \fmf{phantom}{w1,w2}
    \fmffreeze
    
    \fmf{fermion}{i1,w1}
    \fmf{fermion}{i2,w2}

    \fmf{photon,label=W}{w1,w2}

    \fmf{fermion}{w1,t2,o1}
    \fmf{fermion}{w2,o2}
    
    \fmf{dashes,tension=0}{t2,o3}

    % labels
    \fmflabel{b}{i1}
    \fmflabel{q}{i2}
    \fmflabel{t}{o1}
    \fmflabel{q'}{o2}
    \fmflabel{H}{o3}
  \end{fmfgraph*}
\end{fmffile}

\end{document}
