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A precise measurement of the Bd0 meson lifetime using a new technique

par Abreu, Pedro;Bertrand, Daniel ; [et al.]
Référence Zeitschrift für Physik. C, Particles and fields, 74, page (19-32)
Publication Publié, 1997

Article révisé par les pairs

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Résumé :

From data recorded by DELPHI between 1991 and 1994, which corresponds to 3.2 million hadronic Z0 decays, a measurement of the Bd0 meson lifetime, based on the inclusive reconstruction of 3520 ± 150 semileptonic decays of the type Bd0 → D*+ X ℓ νℓ, has been performed. The result is: τ(Bd0) = 1.532 ± 0.041(stat.) ± 0.040(syst.)ps. The contribution to the systematic uncertainty which depends on external errors is ±0.015. © Springer-Verlag 1997.