Measurement of f(c -> D^*+ X), f(b -> D^*+ X) and Gamma_cc(bar)/Gamma_had using D^*+/- Mesons

Simple item page
dc.creatorThe OPAL Collaboration
dc.creatoral, K. Ackerstaff et
dc.date1997-08-16
dc.date.accessioned2026-07-07T11:46:48Z
dc.date.available2026-07-07T11:46:48Z
dc.descriptionThe production rates of D^*+/- mesons in charm and bottom events at centre-of-mass energies of about 91 GeV and the partial width of primary cc(bar) pairs in hadronic Z^0 decays have been measured at LEP using almost 4.4 million hadronic Z^0 decays collected with the OPAL detector between 1990 and 1995. Using a combination of several charm quark tagging methods based on fully and partially reconstructed D^*+/- mesons, and a bottom tag based on identified muons and electrons, the hadronisation fractions of charm and bottom quarks into D^*+/- mesons have been found to be: f(b -> D^*+ X) = 0.173 +/- 0.016 +/- 0.012 and f(c -> D^*+ X) = 0.222 +/- 0.014 +/- 0.014 The fraction of cc(bar) events in hadronic Z^0 decays, Gamma_cc(bar)/Gamma_had = Gamma(Z^0 -> cc(bar))/Gamma(Z^0 -> hadrons), is determined to be Gamma_cc(bar)/Gamma_had = 0.180 +/- 0.011 +/- 0.012 +/- 0.006 In all cases the first error is statistical, and the second one systematic. The last error quoted for Gamma_cc(bar)/Gamma_had is due to external branching ratios.
dc.description36 pages, LaTeX, 6 eps figures included, submitted to Zeit. Phys. C
dc.identifierhttps://arxiv.org/abs/hep-ex/9708021
dc.identifierhttp://arxiv.org/abs/hep-ex/9708021
dc.identifierEur.Phys.J.C1:439-459,1998
dc.identifierdoi:10.1007/s100520050095
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/202353
dc.subjectHigh Energy Physics - Experiment
dc.titleMeasurement of f(c -> D^*+ X), f(b -> D^*+ X) and Gamma_cc(bar)/Gamma_had using D^*+/- Mesons
dc.typetext

Files

Collections

arXiv