Measurement of the partial width of the Z0 into b anti-b final states using their semileptonic decays
(1992) Zeitschrift für Physik. C, Particles and fields — Vol. 56, n° 1, p. 47-62 (1992)
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- Abstract
- The spectra of prompt electrons and muons from the semi-leptonic decays of heavy hadrons produced inZ 0 decays have been used to measure the coupling of theZ 0 tob quarks weighted by theB hadrons mean semi-leptonic branching fraction, giving a value: BRbsl∗Γbbˉ/ΓH=0.0221±0.0015 . The data has also been used to measure the value of the fragmentation parameter, defined in the context of the LUND PS Model, version 7.2, giving: ε(b)=(8+5−3±2)10−3 . The corresponding value of the mean fraction of the beam energy taken by aB hadron in the fragmentation of ab quark is: XbE−−−=0.69+0.02−0.03±0.01 . If the values of Γbbˉ andΓ H are taken from the Standard Model, the following value is obtained for the mean semi-leptonic braching fraction ofB hadrons: BR sl b =(10.1±0.7)%. Taking the value of Γbbˉ/ΓH from an independent analysis of DELPHI data based on the use of the boosted sphericity product, a value: BR sl b =(10.1±1.3)% is obtained.
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Abreu, P., Cortina Gil, E., DELPHI Collaboration, & et al. (1992). Measurement of the partial width of the Z0 into b anti-b final states using their semileptonic decays. Zeitschrift für Physik. C, Particles and fields, 56(1), 47-62. https://doi.org/10.1007/BF01589706 (Original work published 1992)