Measurement of lambda(b) production and lifetime in Z0 hadronic decays
(1993) Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics — Vol. 311, n° 1-4, p. 379-390 (1993)
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- 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 View the MathML source pairs, where l is a high transverse momentum lepton in the same jet as the Λ, leads to a production rate: f(b→Λb)×Br(Λb→ΛlνX) = (0.41±0.13±0.09)%. Using a sample of 18 reconstructed Λb decay vertices, the lifetime is determined to be τ(Λb) = (1.04+0.48−0.38±0.10) ps.
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Abreu, P., Cortina Gil, E., DELPHI Collaboration, & et al. (1993). Measurement of lambda(b) production and lifetime in Z0 hadronic decays. Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics, 311(1-4), 379-390. https://doi.org/10.1016/0370-2693(93)90585-6 (Original work published 1993)