Leptonic Decay Constant f sub B of the B(B anti B) Meson and the Beauty Quark Mass.

摘要

We determine the value of the beauty quark mass using the existing detailed experimental information in moment and Borel transformed sum rules for the vector b-quark current anti b gamma /sub mu /b. The resulting value (m/sub b/ = 4.17+-0.02 GeV) is used for calculating the decay constant f/sub B/ and the mass of the B meson via two sum rules, one constructed from the correlation function of two pseudoscalar currents, and the other from the correlation function of a pseudoscalar and an axial vector current. We find f/sub B/ = 170+-20 MeV. (ERA citation 13:052561)