Precise Measurement of B Meson Lifetimes with Hadronic Decay Final States

Abstract

The lifetimes of the B0bar and B- mesons are extracted from 29.1/fb of data collected with the Belle detector at the KEK B-factory. A fit to the decay length differences of neutral and charged B meson pairs, measured in events where one of the B mesons is fully reconstructed in several hadronic modes, yields tau_B0bar = 1.554 +/- 0.030(stat) +/- 0.019(syst) ps, tau_B- = 1.695 +/- 0.026(stat) +/- 0.015(syst) ps, and tau_B-/tau_B0bar = 1.091 +/- 0.023(stat) +/- 0.014(syst).

arXiv comment10 pages, 2 figures, and 1 table. (To be) published in Phys. Rev. Lett

References in corpus (3)

• Spectator Effects in Inclusive Decays of Beauty Hadrons
• Measurement of the CP Violation Parameter sin(2phi_1) in B^0_d Meson Decays
• Measurement of the B^0 and B^+ meson lifetimes with fully reconstructed hadronic final states

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• Study of B meson decays to three-body charmless hadronic final states
• Proper-time Resolution Function for Measurement of Time Evolution of B Mesons at the KEK B-Factory
• Study of Time-Dependent CP-Violating Asymmetries in b->sq q Decays
• Measurements of CP Violation in $B^0\to D^{\ast -}{\pi }^{+}$ and $B^0\to D^{-}{\pi }^{+}$ Decays
• Charmless Hadronic Two-Body B Meson Decays
• Measurement of the Oscillation Frequency for B0-Bobar Mixing using Hadronic B0 Decays
• A Precise Measurement of the B+, B0 and Mean b-hadron Lifetime with the DELPHI Detector at LEP I
• Heavy Flavour Lifetimes and Lifetime Differences