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). RI Chiarelli, Giorgio/E-8953-2012; Azzi, Patrizia/H-5404-2012

MEASUREMENT OF THE B+ AND B0 MESON LIFETIMES

PIACENTINO, Giovanni Maria;
1994

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). RI Chiarelli, Giorgio/E-8953-2012; Azzi, Patrizia/H-5404-2012
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11695/6611
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