The lifetimes of the B+ and B0 mesons have been measured using fully reconstructed decays. In a sample of approximately 49 600 J/psi --> mu+mu- decays recorded with the Collider Detector at Fermilab, 148 +/- 16 B+ and 121 +/- 16 B0 mesons have been reconstructed using the silicon vertex detector. Unbinned likelihood fits to the proper lifetime distributions of these B mesons give tau+ = 1.61 +/- 0.16 (stat) +/- 0.05 (syst) ps, tau0 = 1.57 +/- 0.18 (stat) +/- 0.08 (syst) ps, and tau+/tau0 = 1.02 +/- 0.16 (stat) +/- 0.05 (syst).

F., A., M., A., D., A., C., A., G., A., H., A., et al. (1994). Measurement of the B+ and B0 Meson Lifetimes. PHYSICAL REVIEW LETTERS, 72(22), 3456-3460 [10.1103/PhysRevLett.72.3456].

Measurement of the B+ and B0 Meson Lifetimes

PAOLETTI, RICCARDO;
1994-01-01

Abstract

The lifetimes of the B+ and B0 mesons have been measured using fully reconstructed decays. In a sample of approximately 49 600 J/psi --> mu+mu- decays recorded with the Collider Detector at Fermilab, 148 +/- 16 B+ and 121 +/- 16 B0 mesons have been reconstructed using the silicon vertex detector. Unbinned likelihood fits to the proper lifetime distributions of these B mesons give tau+ = 1.61 +/- 0.16 (stat) +/- 0.05 (syst) ps, tau0 = 1.57 +/- 0.18 (stat) +/- 0.08 (syst) ps, and tau+/tau0 = 1.02 +/- 0.16 (stat) +/- 0.05 (syst).
1994
F., A., M., A., D., A., C., A., G., A., H., A., et al. (1994). Measurement of the B+ and B0 Meson Lifetimes. PHYSICAL REVIEW LETTERS, 72(22), 3456-3460 [10.1103/PhysRevLett.72.3456].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11365/39176
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