67 research outputs found

    New measurement of exotic decay of 225^{225}Ac by 14^{14}C emission

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    The branching ratio of 225^{225}Ac decay by emission of 14^{14}C was remeasured under improved experimental conditions by using a radioactive source produced at the ISOLDE mass-separator at CERN and a nuclear track detector technique. The result, B=λ14C/λα=(4.5±1.4)1012\lambda_{^{14}\textrm{C}} / \lambda_{\alpha} = (4.5 \pm 1.4) 10^{-12}, is consistent with the anomalously high value obtained in the 1993 experiment thus confirming the importance of nuclear structure effects in this exotic decay

    Measurement of the τ\tau Lepton Polarization and its Forward-Backward Asymmetry from Z0Z^{0} Decays

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    The Physics of the B Factories

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    This work is on the Physics of the B Factories. Part A of this book contains a brief description of the SLAC and KEK B Factories as well as their detectors, BaBar and Belle, and data taking related issues. Part B discusses tools and methods used by the experiments in order to obtain results. The results themselves can be found in Part C

    The Physics of the B Factories

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