Measurement of the average lifetime of b hadrons
The average lifetime of b hadrons has been measured using the L3 detector at LEP, running at √s ≈ M<sub>Z</sub>. A b-enriched sample was obtained from 432538 hadronic Z events collected in 1990 and 1991 by tagging electrons and muons from semileptonic b hadron decays. From maximum likeli...
Guardado en:
| Autores principales: | , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
1993
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/81598 |
| Aporte de: |
| Sumario: | The average lifetime of b hadrons has been measured using the L3 detector at LEP, running at √s ≈ M<sub>Z</sub>. A b-enriched sample was obtained from 432538 hadronic Z events collected in 1990 and 1991 by tagging electrons and muons from semileptonic b hadron decays. From maximum likelihood fits to the electron and muon impact parameter distributions, the average b hadron lifetime was measured to be τ<sub>b</sub> = (1535 ± 35 ± 28) fs, where the first error is statistical and the second includes both the experimental and the theoretical systematic uncertainties. |
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