Recent Results on Charm Photoproduction
نویسنده
چکیده
Photoproduction of D± s mesons has been measured in the ZEUS detector at HERA and compared with predictions of NLO pQCD calculations. The ratio of D∗± s to D ∗± cross sections has been compared to results from e+e− experiments. Orbitally excited P-wave charm mesons have been observed in the D∗±π∓ final state. The fraction of D∗± ’s originating from these mesons has been calculated and compared with that from e+e− interactions. No evidence for radially excited mesons decaying to D∗±π+π− was found. The inelastic production of J/ψ mesons has been measured and compared to LO and NLO pQCD predictions.
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