Measurement of excited charm and charm-strange meson production with ZEUS at HERA

The production of excited charm, D_1(2420)^0 and D_2^*(2460)^0,
and charm-strange, D_s1(2536)+/-, mesons was measured with
the ZEUS detector at HERA using an integrated luminosity of 126 pb^-1.
The mesons were reconstructed in the D^*+ pi^-, D^+ pi^-, D^*+ K^0_s
and D^0 K^+ (+c.c.) final states. The measured yields were used to determine
the rates of c quarks hadronising as a given excited D meson and to
the ratios of the dominant D_2^*(2460)^0 and D_s1(2536)+/- branching ratios.
A search for the radially excited charm meson, D^*(2640)+/-, in the
D^*+ pi^+ pi^- (+c.c.) final state was also performed.
The results are compared with previous measurements and with theoretical
expectations.