\documentstyle[12pt,epsf,epsfig,wrapfig]{article}
\pagestyle{empty}
%
%   LaTeX format for a contributed Abstract to the
%
%                         P H O T O N 9 9
%                          Freiburg
%                       May  23 - 27, 1999
%
%                  Copied with permission from PHOTON 97
%                  Copied without permission from SPIN 96
%
\setlength{\hoffset}          {0mm}
\setlength{\voffset}          {0mm}
\setlength{\oddsidemargin}    {0mm}
\setlength{\evensidemargin}   {0mm}
\setlength{\topmargin}        {10mm}
\setlength{\headheight}       {15pt}
\setlength{\headsep}          {15pt}
\setlength{\textheight}       {230mm}
\setlength{\textwidth}        {150mm}
\setlength{\marginparsep}     {3mm}
\setlength{\marginparwidth}   {18mm}
%
\begin{document}
\begin{flushright}
% filled out be conference secratariat
Abstract \#000, \today
\end{flushright}
\begin{center}
{\large \bf
\boldmath Measurement of elastic $\omega$ photoproduction at HERA
\\ }
\vspace{5mm}
M.~Erdmann$^1$
(for the H1 Collaboration)
\\
\vspace{5mm}
{\small\it
(1) University Karlsruhe / DESY, Notkestr. 85, D-22607 Hamburg, Germany
\\
}
\end{center}
The reaction $\gamma p \rightarrow \omega p$ ($\omega \rightarrow
\pi^0 \gamma$ and $\pi^0 \rightarrow \gamma \gamma$) is studied 
at photon-proton centre-of-mass energies around
$200 {\rm\ GeV}$ using the H1 detector at HERA.
Measurements are presented of the 
photon-proton cross section for elastic $\omega$ production
and of the differential cross section ${\rm d}\sigma/{\rm d}|t|$.
The $t$-dependence is found to follow an exponential distribution
of the form ${\rm d}\sigma/{\rm d}|t| \propto \exp{-b|t|}$. 
The slope parameter $b$ is determined and is compared with the
measurements of other elastic meson production processes.

\end{document}