A Measurement of the b baryon lifetime - INSPIRE

DataBETA

A Measurement of the b baryon lifetime

ALEPH

Collaboration

Aug, 1992

10 pages

Published in:

Phys.Lett.B 297 (1992) 449-458

Published: 1992

DOI:

10.1016/0370-2693(92)91284-G

PDG:

{{\mathit b}}

\rightarrow

{{\mathit \Lambda}}{{\mathit \ell}^{-}}{{\overline{\mathit \nu}}_{{{{{\mathit \ell}}}}}}

Report number:

CERN-PPE-92-138

Experiments:

CERN-LEP-ALEPH

View in:

CERN Document Server

reference search61 citations

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Abstract: (Elsevier)

In 451 000 hadronic Z 0 decays, recorded with the ALEPH detector at LEP, the yields of Λ ℓ − and Λ ℓ + combinations are measured. Semileptonic decays of b baryons result in a signal of 122± 18 (stat.) −23 +22 (syst.) Λ ℓ − combinations. From a fit to the impact parameter distributions of the leptons in the Λ ℓ − sample, the lifetime of b baryons is measured to be 1.12 −0.29 +0.32 (stat.) ±0.16 (syst.) ps.

electron positron: colliding beams
colliding beams: electron positron
electron positron: annihilation
annihilation: electron positron
Z0: electroproduction
electroproduction: Z0
Z0: nonleptonic decay
nonleptonic decay: Z0
bottom: pair production
pair production: bottom

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Figures(0)

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