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Measurement of the B(0) and B(+) meson lifetimes with fully reconstructed hadronic final states



Measurement of the B(0) and B(+) meson lifetimes with fully reconstructed hadronic final states



Physical Review Letters 87(20): 201803



The B(0) and B(+) meson lifetimes have been measured in e(+)e(-) annihilation data collected in 1999 and 2000 with the BABAR detector at center-of-mass energies near the Upsilon(4S) resonance. Events are selected in which one B meson is fully reconstructed in a hadronic final state while the second B meson is reconstructed inclusively. A combined fit to the B(0) and the B(+) decay time difference distributions yields tau(B(0)) = 1.546+/-0.032(stat)+/-0.022(syst) ps, tau(B(+)) = 1.673+/-0.032(stat)+/-0.023(syst) ps, and tau(B(+))/tau(B(0)) = 1.082+/-0.026(stat)+/-0.012(syst).

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Accession: 046636868

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PMID: 11690464

DOI: 10.1103/PhysRevLett.87.201803


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