\documentclass[a4,portrait]{seminar}
\usepackage{amssymb,colordvi,german,epsfig,pstricks,fancybox,semcolor}
%\usepackage{amssymb,german,epsfig,pstricks,fancybox}
%\usepackage[dvips]{pstcol}
\usepackage{pst-coil}
\usepackage{graphicx}

%\setlength{\slidewidth}{26cm}
%\setlength{\slideheight}{17cm}
%\renewcommand{\slideleftmargin}{2cm}
%\renewcommand{\slidetopmargin}{1cm}

%\definecolor{orange}{rgb}{1.0,0.55,0.25}
\newhsbcolor{myred}{0 0.8 0.9}
\newhsbcolor{myblue}{0.654 0.8 0.8}
\newhsbcolor{myorange}{0.083 0.4 1}
\newhsbcolor{mygreen}{0.32 0.8 0.6}

\begin{document}
\pagestyle{empty}

%\slideframe{Oval}
\slideframe{none}

\begin{slide*}      % slide* waehlt portrait format/slide waehlt landscape

\unitlength1cm
\begin{picture}(5,3)\thicklines \boldmath
\put(3.5,2){\psline[linewidth=0.8pt]{<-}(-1,0.4)}
\put(4,1.8){\psline[linewidth=0.8pt](-0.5,0.2)}
\put(4,1.8){\psline[linewidth=0.8pt]{->}(0.7,0.3)}
\put(4.7,2.1){\psline[linewidth=0.8pt](0.7,0.3)}
\put(2.95,2.35){$\scriptstyle e^-$}
\put(4.1,2.35){$\scriptstyle e^-(\nu_e)$}
\put(3,1.8){\blue$\scriptstyle k$}
\put(4.8,1.8){\blue$\scriptstyle k'$}
\put(4.02,0.75){\rput{90}{%
 \psCoil[linecolor=green,coilaspect=0,coilheight=3.5,coilwidth=0.075,
  linewidth=1pt]{0}{1440}
 \rput{*0}{}}}
\put(2.35,1.1){\green$\scriptstyle \gamma,\,Z^0,W^\pm$}
\put(5,1.1){\blue$\scriptstyle Q^2 = -q^2$}
\psellipse*[linewidth=1pt](2.7,0.4)(0.1,0.3)
\put(2.725,0.69){\red\line(1,0){1.3}}
\put(4.025,0.69){\psline[linecolor=red,linewidth=0.8pt]{->}(1.5,-1.5)}
\multiput(2.74,0.13)(0,0.27){2}{\psline[linewidth=0.8pt]{->}(3,0)}
\put(1.9,0.4){\psline[linewidth=0.8pt]{->}(0.7,0)}
\put(0.5,0.35){\footnotesize\sf Proton}
\put(2.1,0.15){\blue$\scriptstyle p$}
\put(6,-0.1){\blue W}
\end{picture}


\end{slide*}
\end{document}
