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MEASUREMENT OF LAMBDA-B PRODUCTION AND LIFETIME IN Z0 HADRONIC DECAYS

Abstract:

Evidence for the production of b-flavoured baryons in Z0 decays is reported from the analysis of 365 000 hadronic events collected by the DELPHI detector. Assuming that most of the weakly decaying b flavoured baryons produced by the Z0 are Λb, the observed signal of (Λl- + Λ̄l+) pairs, where l is a high transverse momentum lepton in the same jet as the Λ, leads to a production rate: f (b → Λb) x Br(Λb → Λlv X) = (0.41±0.13± 0.09)%. Using a sample of 18 reconstructed Λb decay vertices, the lif...

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Publication status:
Published

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Journal:
PHYSICS LETTERS B
Volume:
311
Issue:
1-4
Pages:
379-390
Publication date:
1993-07-29
DOI:
ISSN:
0370-2693
URN:
uuid:da169f7a-99f0-4e97-be66-b6d6df228ffa
Source identifiers:
5869
Local pid:
pubs:5869
Language:
English

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