Production Of Excited P-Wave Charm Mesons At Hera

The production of excited charm mesons has been observed with the ZEUS detector at HERA. Neutral orbitally excited P-wave charm mesons have been reconstructed in the D*(+/-)pi(-/+) final state and the charm-strange meson D-s1(+/-)(2536) was found in the D*K-+/-(s)0 final state. The fraction of D*(+/-) mesons originating from the decays of these mesons has been calculated and converted to the rate of c quarks hadronising as the excited charm mesons. A search for radially excited charm mesons in the D*(+/-)pi(+)pi(-) final state has also been performed. The results are compared with those obtained in e(+)e(-) annihilations.