149 research outputs found

    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

    Measurement of the mass of the τ lepton

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    The Physics of the B Factories

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    Charmonium spectroscopy in p̄p annihilations

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    Ambient and configuration databases for the BaBar online system

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    Observation of Atomic Antihydrogen

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    Measuring the Antihydrogen Lamb Shift with a Relativistic Antihydrogen Beam," FNAL-Pub-97/426-E, Phys. Rev. D (in press), available at http://publish.aps.org/eprint/gateway/eplist/aps1997dec17

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    We propose an experiment to measure the Lamb shift and fine structure ͑the intervals 2s 1/2 Ϫ2 p 1/2 and 2 p 1/2 Ϫ2p 3/2 ) in antihydrogen. A sample of 10 000 antihydrogen atoms at a momentum of 8.85 GeV/c suffices to measure the Lamb shift to 5% and the fine structure to 1%. Atomic collisions excite antihydrogen atoms to states with nϭ2; field ionization in a Lorentz-transformed laboratory magnetic field then prepares a particular nϭ2 state, and is used again to analyze that state after it is allowed to oscillate in a region of zero field. This experiment is feasible at Fermilab. ͓S0556-2821͑98͒04711-0
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