Abstract
We compute the leading α s corrections to the two-point correlator of the O ΔB=2 operator which controls the B 0 B 0 mixing. Using this result within the QCD spectral sum rules approach and some phenomenologically reasonable assumptions in the parametrization of the spectral function, we conclude that the vacuum saturation values B B ⋍ B B ∗ ⋍ 1 are satisfied within 15%.
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