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%                         P H O T O N 9 9
%                          Freiburg
%                       May  23 - 27, 1999
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Abstract \#000, \today
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{\large \bf
\boldmath Measurement of the production of $D^{*\pm}$ mesons in
deep-inelastic diffractive interactions 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
\\
}
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A measurement is presented of $D^{*\pm}$ meson production in
diffractive interactions at HERA. The cross section is measured in the
kinematic range of deep inelastic scattering 
$2< Q^2 < 100 \ {\rm GeV^2}$, $0.05 < y < 0.7$ and is presented 
differentially as a function of the $D^*$ meson 
transverse momentum and pseudo-rapidity and of observables exploring
the diffractive characteristics of the process.
The results are compared with a model based on
a partonic pomeron as determined in a QCD analysis of the diffractive
structure function, with perturbative QCD calculations of two gluon exchange
and with a soft colour interaction model.


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