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\begin{document}  
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\def\CPC{\em Comp. Phys. Commun.}

\begin{titlepage}

\noindent
%\begin{flushleft}
%{\tt DESY YY-NNN    \hfill    ISSN 0418-9833} \\
%{\tt Month YYYY}                  \\
%\end{flushleft}



\noindent
%Date:          [today  instruction is preferred] \\ %\today      \\
%Version:       Preparatives 0.1,0.2...; 1st draft: 1.0, 1.1...; 2nd Draft 2.0..., Final Reading 3.0,3.1...      \\
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\noindent
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%%%%%%%%%%%% For conference papers  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%% coment the header and fill the right conference
%%%%% {\it {\large version of \today}} \\[.3em]
\begin{center} %%% you may want to use this line for working versions
 \begin{small}
 \begin{tabular}{llrr}
 {\bf H1prelim-09-031} Submitted to & & &
 \epsfig{file=H1logo_bw_small.epsi
 ,width=1.5cm} \\[.2em] \hline
 \multicolumn{4}{l}{{\bf
                  XVII International Workshop on Deep Inelastic Scattering, 
		  DIS2009},
                  April 26-30,~2009,~Madrid} \\
%                  Abstract:        & {\bf xx-xxx}    & & \\
                  Parallel Session & {\bf Hadronic final states and QCD}   & & \\ \hline
   \multicolumn{4}{l}{\footnotesize {\it Electronic Access:
  www-h1.desy.de/publications/H1preliminary.short\_list.html}} \\[.2em]
 \end{tabular}
 \end{small}
 \end{center}


\vspace{2cm}
\begin{center}
\begin{Large}

{\bf First Observation of Hadronic Final State Charge Asymmetry in High {\boldmath $Q^2$} 
Deep-Inelastic Scattering at HERA}

\vspace{2cm}

H1 Collaboration

\end{Large}
\end{center}

\vspace{2cm}

\begin{abstract}
A first measurement of the charge asymmetry in the scattered hadronic final
state in high $Q^{2}$ deep-inelastic $ep$ neutral current scattering at
HERA has been made.
The difference between the normalised distribution of the scaled momentum,
$x_{p}$, for positive and negative particles, measured in the current region
of the Breit frame, has been studied together with its evolution as a
function of $Q^{2}$.
The results are compared to Monte Carlo models at the hadron and parton
level.
\end{abstract}

\vspace{1.5cm}

%\begin{center}
%To be submitted to \EJC \;\; or \PLB
%\end{center}

\end{titlepage}

%          THE PAPER DRAFTS HAVE NO AUTHORLIST
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%          FOR PAPER ISSUED FOR THE FINAL READING 
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% Please not that the author list may need re-formatting.

\newpage


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\begin{figure}[hhh]
\center
\epsfig{file=H1Prelim-09-031.fig1.eps,width=\textwidth}
\setlength{\unitlength}{1cm}
% \begin{picture}(15.0,10.0)
% \put(0.,0.0)
% {\epsfig{file=/h1/psfiles/figures/d98-029f6.eps,width=11.0cm}}
% \end{picture}
\caption{
\label{fig:H1Prelim-09-031.fig1} (a) The measured normalised
distributions of the scaled momentum, $\frac{1}{N} dn/dx_{p}$, for all
charged particles and for positive and negative separately and (b, c) the
charge asymmetry, $(n^{+}-n^{-})/(n^{+}+n^{-})$, as a function of $x_{p}$.
The inner error bars represent the statistical errors, the outer error bars 
the statistical and systematic errors added in quadrature.
%The error bars include statistical and systematic errors added in quadrature. 
The data are compared to predictions from different models of
the parton cascade and hadronisation processes implemented in leading order
matrix element Monte Carlo programs and to the parton level before
hadronisation.
}
\end{figure}

\begin{figure}[hhh]
\center
\epsfig{file=H1Prelim-09-031.fig2.eps,width=\textwidth}
\setlength{\unitlength}{1cm}
% \begin{picture}(15.0,10.0)
% \put(0.,0.0)
% {\epsfig{file=/h1/psfiles/figures/d98-029f6.eps,width=8.0cm}}
% \end{picture}
\caption{ 
\label{fig:H1Prelim-09-031.fig2} The measured normalised
distributions of the scaled momentum, $\frac{1}{N} dn/dx_{p}$, for all
charged particles and for positive and negative separately, as a function of
$Q$ for nine different $x_{p}$ regions. The error bars include statistical and
systematic errors added in quadrature. The data are displayed at the average
value of $Q$.
The data are compared to predictions from the CDM Monte Carlo program.
}
\end{figure}

\begin{figure}[hhh]
\center
\epsfig{file=H1Prelim-09-031.fig3.eps,width=\textwidth}
\setlength{\unitlength}{1cm}
% \begin{picture}(15.0,10.0)
% \put(0.,0.0)
% {\epsfig{file=/h1/psfiles/figures/d98-029f6.eps,width=8.0cm}}
% \end{picture}
\caption{ 
\label{fig:H1Prelim-09-031.fig3} The charge asymmetry,
$(n^{+}-n^{-})/(n^{+}+n^{-})$, as a function of $Q$ for nine different $x_{p}$
regions. The error bars include statistical and systematic errors added in
quadrature. The data are displayed at the average value of $Q$. The data are
compared to predictions from different models of the parton cascade and
hadronisation processes implemented in leading order matrix element Monte
Carlo programs.
}
\end{figure}



\end{document}




