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Production of excited charm and charm-strange mesons at HERA
Journal article   Open access   Peer reviewed

Production of excited charm and charm-strange mesons at HERA

S. Chekanov, M. Derrick, S. Magill, B. Musgrave, D. Nicholass, J. Repond, R. Yoshida, M. C. K. Mattingly, P. Antonioli, G. Bari, …
The European physical journal. C, Particles and fields, Vol.60(1), pp.25-45
03/01/2009
DOI: 10.1140/epjc/s10052-009-0881-x
url
https://doi.org/10.1140/epjc/s10052-009-0881-xView
Published (Version of record) Open Access

Abstract

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.
Physical Sciences Physics Physics, Particles & Fields Science & Technology

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