We report a measurement of the exclusive $e^+e^- \to D^{(*)\pm}{D}{}^{*\mp}$ cross section as a function of center-of-mass energy near the $D^{(*)^{\pm}}{D}{}^{*\mp}$ threshold with initial state radiation. A partial reconstruction technique is used to increase the efficiency and to suppress background. The analysis is based on a data sample collected with the Belle detector at the $\Upsilon(4S)$ resonance and nearby continuum with an integrated luminosity of 547.8 $\mathrm{fb}^{-1}$ at the KEKB asymmetric-energy $e^+ e^-$ collider.
Cross section for E+ E- --> D*+ D*-.
Cross section for E+ E- --> D+ D*- (plus charged conjugate).
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CHARGED AND NEUTRAL D MESON INCLUSIVE CROSS SECTIONS.
RATIO R FOR D PRODUCTION - THE FACTOR OF TWO ACCOUNTS FOR THE FACT THAT CHARMED PARTICLES ARE PRODUCED IN PAIRS.
FIT TO D AND D* PRODUCTION IN THRESHOLD REGION. RESULTS FOR ANISOTROPIC FIT (ASSUMING ISOTROPIC D* DECAY IS ALMOST IDENTICAL).