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B Leptonic Decays and B- bar B Mixing with 2+1 Flavors of Dynamical Quarks

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arxiv hep-lat/0409040 v1 pith:XKTBT4Y6 submitted 2004-09-10 hep-lat

classification hep-lat
keywords beendecaysdeterminationdynamicalelementsleptonicmatrixmixing
verification ladder T0 review T1 audit T2 compute T3 formal
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Calculations of B leptonic decays and B- bar B mixing using NRQCD heavy and Asqtad light valence quarks on the MILC dynamical configurations are described. Smearing has been implemented to substantially reduce the statistical errors of the matrix elements needed for the determination of f_B. The four-fermion matrix elements needed for the determination of f_{B_s}^2B_{B_s} have been calculated and a preliminary result is given.

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