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Observation of the semileptonic decays of B(s) and LAMBDA(b) hadrons at LEP

Buskulic, D. and Finch, Alexander (1992) Observation of the semileptonic decays of B(s) and LAMBDA(b) hadrons at LEP. Physics Letters B, 294 (1). pp. 145-156. ISSN 0370-2693

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Abstract

In 450 000 hadronic Z decays recorded with the ALEPH detector at LEP, the yields of Ds−ℓ+ and Λc+ℓ− combinations have been measured. 16.0 ± 4.3 Ds−ℓ+ combinations were observed in the Ds− → ππ− channel and 17.0 ± 4.5 combinations were observed in the channel. 21.0 ± 5.0 Λc+ℓ− combinations were observed, with the Λc+ reconstructed in the decay mode Λc+ → pK−π+. These events provide evidence for the decays . Assuming that the Bs and Λb semileptonic decays are dominantly three-body, these observed yields, after background subtraction, translate into the following product branching ratios: , .

Item Type: Article
Journal or Publication Title: Physics Letters B
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 63774
Deposited By: ep_importer_pure
Deposited On: 07 May 2013 15:44
Refereed?: Yes
Published?: Published
Last Modified: 30 Aug 2017 14:04
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/63774

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