Measurement of the average lifetime of B hadrons
Collaboration
32 pages
Published in:
- Z.Phys.C 53 (1992) 567-580
DOI:
Report number:
- CERN-PPE-91-131
Experiments:
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Abstract: (Springer)
The average lifetime ofB hadrons produced in hadronicZ0 decays has been measured with the DELPHI detector at LEP. The measurement is based on the analysis of the impact parameter distributions of highpt muons and hadrons. The resulting meanB lifetimes are τB=(1.30±0.10±0.08)ps and τB=(1.27±0.04±0.12)ps respectively, giving a combined value of τB=(1.28±0.10)ps. The hadronic sample was also used to measure the partialZ0 width{{\Gamma _{b\bar b} } \mathord{\left/ {\vphantom {{\Gamma _{b\bar b} } {\Gamma _h }}} \right. \kern-\nulldelimiterspace} {\Gamma _h }} and gave a value of 0.222−0.031+0.033±0.017.- electron positron: colliding beams
- colliding beams: electron positron
- electron positron: annihilation
- annihilation: electron positron
- Z0: electroproduction
- electroproduction: Z0
- Z0: nonleptonic decay
- nonleptonic decay: Z0
- Z0: width
- bottom: pair production
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