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\noindent
% {\bf H-UM \& JS: version of \today} \\[.3em] 
Submitted to the 30th International Conference on 
High-Energy Physics ICHEP2000, \\ 
Osaka, Japan, July 2000


\vspace*{3cm}

\begin{center}
  \Large
  {\bf 
 Dijet Production in Charged and Neutral Current \\
$e^{+}p$ Interactions at high $Q^2$}
%    Search for Compositeness, Leptoquarks \\  
%    and Large Extra Dimensions \\ 
%    in {\boldmath $e q$} Contact Interactions at HERA}
%    in {\boldmath $e^- q$} and {\boldmath $e^+ q$}
%    Contact Interactions at HERA}

  \vspace*{1cm}
    {\Large H1 Collaboration} 
\end{center}

\begin{abstract}
\noindent
Jet production in charged and neutral current events in the 
kinematic range of $Q^2$ from 640 to 35\,000~GeV$^2$ 
is studied in deep-inelastic positron-proton scattering at HERA. 
The distributions of jet polar angle, transverse energy, jet resolution, 
dijet mass, and other dijet variables are measured. 
% using the modified Durham jet algorithm. 
%For the first time events with pronounced dijet structures are observed in 
%charged current processes. 
%The jet distributions in charged and neutral current scattering are well 
%described by perturbative QCD calculations in next-to-leading order.
Using parton densities derived from inclusive DIS cross sections, 
perturbative QCD calculations in NLO are found to give a consistent 
description of both the neutral and charged current dijet production. 
% and by the QCD Monte Carlo models ARIADNE 4.10 and HERWIG 5.9. 
%Perturbative QCD calculations without boson-gluon-fusion are not 
%compatible with the charged current data.  
A direct, model independent comparison of the jet distributions in 
charged and neutral current events
%, selected in the same kinematic range, 
confirms that the QCD dynamics of the hadronic final state is 
independent of the underlying electroweak scattering process.
\end{abstract}

\vfill
\begin{flushleft}
  {\bf Abstract: 993, 994 } \\
  {\bf Parallel session: 11,3} \\
  {\bf Plenary talk: 7~b,11 } 
\end{flushleft}

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