Determination of the Production Rate of D^*0 Mesons and of the Ratio V/(V+P) in Z^0 -> cc(bar) Decays

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dc.creatorThe OPAL Collaboration
dc.creatoral, K. Ackerstaff et
dc.date1998-02-05
dc.date.accessioned2026-07-07T12:02:18Z
dc.date.available2026-07-07T12:02:18Z
dc.descriptionIn e^+e^- collisions at centre-of-mass energies around 91 GeV, D^*0 mesons have been reconstructed using data collected with the OPAL detector at LEP. The hadronisation fraction has been measured to be f(c -> D^*0) = 0.218 +/- 0.054 +/- 0.045 +/- 0.007, where the errors correspond to the statistical and systematic errors specific to this analysis, and to systematic uncertainties from externally measured branching fractions, respectively. Together with previous OPAL measurements of the hadronisation fractions of other charmed mesons, this value is used to investigate the relative production of observed vector and pseudoscalar charmed mesons in Z^0 -> cc(bar) decays. The production ratio is determined to be P^eff_V = V/(V+P) = 0.57 +/- 0.05. The relative primary production of vector and pseudoscalar mesons, P^prim_V, is studied in the context of the production and decay of orbitally excited charmed resonances. The first measurement of the inclusive D^*+_s production rate in hadronic Z^0 decays is presented.
dc.description34 pages, LaTeX, uses pennames and ap4.sty, 5 eps figures included, submitted to Eur. Phys. J. C
dc.identifierhttps://arxiv.org/abs/hep-ex/9802008
dc.identifierhttp://arxiv.org/abs/hep-ex/9802008
dc.identifierEur.Phys.J.C5:1-17,1998
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/207397
dc.subjectHigh Energy Physics - Experiment
dc.titleDetermination of the Production Rate of D^*0 Mesons and of the Ratio V/(V+P) in Z^0 -> cc(bar) Decays
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