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

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

2004-09-10

arxiv.org/abs/hep-lat/0409040v1

Physics

High Energy Physics

High Energy Physics - Lattice

3 pages, 3 figures, talk given at Lattice2004(heavy), Batavia, Illinois, 21-26 Jun 2004

Scientific paper

10.1016/j.nuclphysbps.2004.11.31

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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