Abstract
Kinematic correlations between the charmed D and D mesons produced by a photon beam of mean energy 100 GeV c have been measured by the NA 14 2 experiment at CERN using a sample of almost background-free fully reconstructed D D events. The observed D and D D distributions are compared to the predictions of production models using different parameters for the charm fragmentation function and for the intrinsic transverse momentum of the partons.
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