Improved measurements of the $B^0$ and $B^{+}$ meson lifetimes - INSPIRE

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Improved measurements of the $B^0$ and $B^{+}$ meson lifetimes

OPAL

Collaboration

•

R. Akers

Feb, 1995

21 pages

Published in:

Z.Phys.C 67 (1995) 379-388

DOI:

10.1007/BF01624581

PDG:

{{\mathit B}^{\pm}}

Report number:

CERN-PPE-95-019,
CERN-PPE-95-19

Experiments:

CERN-LEP-OPAL

View in:

CERN Document Server

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Abstract: (Springer)

Updated measurements of the B0 and B+ meson lifetimes are presented. From a data sample of 1.72 million hadronic Z0 decays recorded during the period 1991 to 1993, a sample of approximately 1000 semileptonic B meson decays containing a D0, D+ or D*+ has been isolated. From the distribution of decay times in the different samples the lifetimes of the B0 and B+ mesons are determined to be 1.53±0.12±0.08 ps and 1.52±0.14±0.09 ps, respectively, where the first error is statistical and the second systematic. The ratio of the B+ to B0 lifetimes is measured to be 0.99±0.14−0.04+0.05, confirming expectations that the lifetimes are similar.

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

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