%% 
%%  The LaTeX Graphics Companion, 2ed (first printing May 2007)
%% 
%%  Example 8-4-11 on page 560.
%% 
%%  Copyright (C) 2007 Michel Goossens, Frank Mittelbach, Denis Roegel, Sebastian Rahtz, Herbert Vo\ss 
%% 
%%  It may be distributed and/or modified under the conditions
%%  of the LaTeX Project Public License, either version 1.3
%%  of this license or (at your option) any later version.
%% 
%%  See http://www.latex-project.org/lppl.txt for details.
%% 

\documentclass{ttctexa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{159.83385pt}

\StartShownPreambleCommands
\usepackage{axodraw,heppennames}
\StopShownPreambleCommands
\begin{document}
\begin{picture}(280,80)(0,0)
 \ZigZag(10,40)(50,40){2}{5}
 \ZigZag(75,40)(115,40){2}{5}
 \ArrowArc(62.5,40)(12.5,0,180)
 \ArrowArc(62.5,40)(12.5,180,360)
 \Text(62.5,58)[b]{{\large\Paqb}}%$\bar{\mathrm{b}}$
 \Text(62.5,22)[t]{{\large\Pqt}}%$\mathrm{t}$
 \Text(5,40)[r]{{\large\PWp}}%$\mathrm{W}^+$
 \Text(120,40)[l]{{\large\PWp}}%$\mathrm{W}^+$
\end{picture}
\end{document}