this is a test
[tex]
<br />
documentclass[a4paper,11pt]{article}<br />
\usepackage{latexsym} <br />
\usepackage{sparticles} %Package for displaying sparticle names. <br />
\usepackage{feynmf} %Package for feynman diagrams. <br />
\author{William Ruddick}<br />
\title{Example Selectron Feynman Diagrams}<br />
\begin{document}<br />
\maketitle<br />
<br />
\begin{figure}[!htb]<br />
\begin{center}<br />
\begin{tabular}{cccccccccccccccc} %Adds several centered Columns<br />
<br />
\begin{fmffile}{one} %one.mf will be created for this feynman diagram <br />
\fmfframe(1,7)(1,7){ %Sets dimension of Diagram<br />
\begin{fmfgraph*}(110,62) %Sets size of Diagram<br />
\fmfleft{i1,i2} %Sets there to be 2 sources <br />
\fmfright{o1,o2} %Sets there to be 2 outputs<br />
\fmflabel{$e^-$}{i1} %Labels one of the left sources<br />
\fmflabel{$e^+$}{i2} %Labels one of the left sources<br />
\fmflabel{${\ensuremath{\erlpm}}$}{o1} %Labels one of the right outputs<br />
\fmflabel{${\ensuremath{\erlpm}}$}{o2} %Labels one of the right outputs<br />
\fmf{fermion}{i1,v1,i2} %Connects the sources with a vertex.<br />
\fmf{fermion}{o1,v2,o2} %Connects the outputs with a vertex.<br />
\fmf{photon,label=$\gamma/Z^0$}{v1,v2} %Labels the conneting line.<br />
\end{fmfgraph*}<br />
}<br />
\end{fmffile}<br />
&&&&<br />
[/tex]