Measurement of the average B hadron lifetime in Z0 decays - INSPIRE

DataBETA

Measurement of the average B hadron lifetime in Z0 decays

OPAL

Collaboration

Nov, 1991

13 pages

Published in:

Phys.Lett.B 274 (1992) 513-525

Published: 1992

DOI:

10.1016/0370-2693(92)92025-C

PDG:

{{\mathit B}^{\pm}}/{{\mathit B}^{0}}/{{\mathit B}_{{{s}}}^{0}}/{{\mathit b}}

-baryon ADMIXTURE MEAN LIFE

Report number:

CERN-PPE-91-201

Experiments:

CERN-LEP-OPAL

View in:

CERN Document Server

reference search35 citations

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Abstract: (Elsevier)

A sample of 689 muon candidates and 665 electron candidates identified in multihadronic Z 0 decays has been used to measure the average B hadron lifetime. These data were recorded with the OPAL detector during 1990. Maximum likelihood fits to the distributions of the lepton impact parameters yield an average B hadron lifetime of τ b = 1.37 ± 0.07 ± 0.06 ps, where the first error is statistical and the second systematic. This result is a weighted average over the semileptonic branching fractions and production rates of the B hadrons produced in Z 0 decays.

electron positron: colliding beams
colliding beams: electron positron
electron positron: annihilation
annihilation: electron positron
Z0: electroproduction
electroproduction: Z0
Z0: nonleptonic decay
nonleptonic decay: Z0
B0: lifetime
B: semileptonic decay

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