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Production of D**(s) mesons in hadronic Z decays

Research output: Contribution to journalJournal article


<mark>Journal publication date</mark>31/01/2002
<mark>Journal</mark>Physics Letters B
Number of pages16
<mark>Original language</mark>English


The production rates of the orbitally excited mesons, Ds1± and , are measured with the 4.1 million hadronic Z decays recorded by the ALEPH detector during 1991–1995. The mesons are reconstructed in the decay modes , and . The production rate of the Ds1± is measured to be f(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 is determined to be , assuming that the branching fraction of the decay is 45%. The production rates in and decays are measured separately.