Production of excited charm and charm-strange mesons at HERA

Details Production of excited charm and charm-strange mesons at HERA Production of excited charm and charm-strange mesons at HERA

2008-07-08

arxiv.org/abs/0807.1290v2

Eur.Phys.J.C60:25-45,2009

Physics

High Energy Physics

High Energy Physics - Experiment

43 pages, 10 figures, 7 tables; minor text revisions

Scientific paper

10.1140/epjc/s10052-009-0881-x

The production of excited charm, D_1(2420)^0 and D_2^*(2460)^0, and charm-strange, D_{s1}(2536)^+-, mesons in ep collisions was measured with the ZEUS detector at HERA using an integrated luminosity of 126 pb^-1. Masses, widths and helicity parameters were determined. The measured yields were converted to the rates of c quarks hadronising as a given excited charm meson and to the ratios of the dominant D_2^*(2460)^0 and D_{s1}(2536)^+- branching fractions. A search for the radially excited charm meson, D^{*'}(2640)^+-, was also performed. The results are compared with those measured previously and with theoretical expectations.

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