Production of Ds** mesons in hadronic Z decays

Details Production of Ds** mesons in hadronic Z decays Production of Ds** mesons in hadronic Z decays

2001-12-07

arxiv.org/abs/hep-ex/0112010v1

Phys.Lett.B526:34-49,2002

Physics

High Energy Physics

High Energy Physics - Experiment

14 pages, 5 figures

Scientific paper

10.1016/S0370-2693(01)01465-4

The production rates of the orbitally excited Ds** mesons, Ds1 and Ds2*, are measured with the 4.1 million hadronic Z decays recorded by the ALEPH detector during 1991--1995. The Ds** mesons are reconstructed in the decay modes Ds1+ -> D*+ K0, Ds1+ -> D*0 K+ and Ds2*+ -> D0 K+. The production rate of the Ds1 is measured to be n(Z->Ds1+-)=(0.52+-0.09+-0.06)%, under the assumption that the two considered decay modes of the Ds1 saturate the branching ratio. The production rate of the Ds2* is determined to be n(Z->Ds2*+-)=(0.83+-0.29+0.07-0.13)%, assuming that the branching fraction of the decay Ds2*+ -> D0 K+ is 45%. The production rates in Z->cc and Z->bbar decays are measured separately

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