F_B from moving B mesons
arXiv:hep-lat/0110003 · doi:10.1016/S0920-5632(01)01729-7
Abstract
We show results for the B meson decay constant calculated both for B mesons at rest and those with non-zero momentum and using both the temporal and spatial components of the axial vector current. It is an important check of lattice systematic errors that all these determinations of f_B should agree. We also describe how well different smearings for the B meson work at non-zero momentum - the optimal smearing has a narrow smearing for the b quark.
Lattice2001(heavyquark)