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- W2078998957 abstract "Evidence for the production of ϒ mesons in hadronic Z 0 decays has recently been reported by the OPAL experiment at LEP. ϒ mesons are identified from their decays into e + e - and μ + μ - pairs. These decays provide a clear signature, since the e + e - and μ + μ - background with invariant mass around 10 GeV/c2 is found to be small. In the first part of this report, a summary of the ϒ analysis is presented and possible production mechanisms are discussed. In the second part, studies on charmonium production are presented. Charmonium studies are based on an inclusive sample of J/ψ candidates, used to derive inclusive J/ψ and ψ′ rates, and the prompt J/ψ rate as well. Finally, since prompt J/ψ mesons are expected to be produced at LEP by the same production mechanisms as for the ϒ, a more general discussion on quarkonium production via fragmentation processes is presented." @default.
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- W2078998957 date "1997-09-10" @default.
- W2078998957 modified "2023-09-24" @default.
- W2078998957 title "Quarkonium Production at LEP with the OPAL Detector" @default.
- W2078998957 doi "https://doi.org/10.1142/s0217751x9700205x" @default.
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