Abstract
The results of a study of charm meson production in semileptonic B hadron decays are presented. Based on a sample of 1.72 million hadronic Z0 decays the following product branching ratios (averaged over electrons and muons) are obtained:
where the first error is statistical and the second systematic.
The results of a search for the narrow P-wave charmed mesons, (D J ), in semileptonic B decays are also reported. Using the decay channels D 0 J →D+π−, D 0 J →D*+π− and D J+ →D0π+ we observe a total signal of 44±8 +3−7 D 0 J and 48±10 +3−6 D + J events. This is the first evidence for semileptonic B decays to charged P-wave charm states. The observed signals also provide evidence for the production of both pseudovector and tensor P-wave charmed mesons in semileptonic B decay. Together these modes are estimated to make up 34±7% of charmed semileptonic B0 and B+ decays.
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OPAL Collaboration., Akers, R., Alexander, G. et al. A study of charm meson production in semileptonic B decays. Z. Phys. C - Particles and Fields 67, 57–68 (1995). https://doi.org/10.1007/BF01564821
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DOI: https://doi.org/10.1007/BF01564821