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

, ALEPH Collaboration (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:
Journal Article
Journal or Publication Title:
Physics Letters B
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3106
Subjects:
ID Code:
63774
Deposited By:
Deposited On:
07 May 2013 14:44
Refereed?:
Yes
Published?:
Published
Last Modified:
27 Jan 2021 19:34