| Abstract | The measurement of charm production in charged current deep inelastic
positron-proton scattering is investigated with the ZEUS detector at the
HERA collider. The data used has been collected from 1995 to 2000,
corresponding to an integrated luminosity of110 pb-1.
Charged D* mesons decaying in the channel
D*+ → D0 π+s with
D0 → K- π+
and the charge-conjugated channel are reconstructed to tag charm
quarks. The visible cross section for D*,
σD*vis = 12.8 ± 4.0(stat) +4.7-1.5(sys) pb,
is measured in the kinematic range of
Q2 > 200 GeV2 and
y < 0.9, and of
pD*T > 1.5 GeV
and |ηD*| < 1.5. The
upper-limit for the charm production in the same DIS kinematic range is
determined to be
σe+p → νecX < 109 pb
at 90% confidence level. |
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