Production rate and decay lifetime measurements of B(s)0 mesons at LEP using D(s) and phi mesons

Abreu, P.;Cortina Gil, Eduardo;DELPHI Collaboration;et.al.
(1994) Zeitschrift für Physik. C, Particles and fields — Vol. 61, n° 3, p. 407-420 (1994)

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Abstract
The study of the properties of inclusive production ofD s mesons and of events in which a ϕ and a muon are present in the same jet provides two independent measurements of the probability,f s w , for a heavy quark to hadronize into a strangeB orD meson. The data sample analysed corresponds to 243,000 hadronicZ 0 decays. The combined value of these measurements isf s w =0.19±0.06±0.08. From the flight distance distributions ofD s and of (ϕ-lepton) secondary vertices, with the lepton emitted at high transverse momentum relative to the jet axis, two values are obtained for theB s 0 meson lifetime. Combining these measurements with a previous result based on the study ofD s-μ events, theB s 0 meson lifetime is measured to be: 0.96±0.37 ps.
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Abreu, P., Cortina Gil, E., DELPHI Collaboration, & et al. (1994). Production rate and decay lifetime measurements of B(s)0 mesons at LEP using D(s) and phi mesons. Zeitschrift für Physik. C, Particles and fields, 61(3), 407-420. https://doi.org/10.1007/BF01413179 (Original work published 1994)