Bc - meson sum rules at next-to-leading order
Andrei I. Onishchenko
Abstract
We present Bc-meson two-point sum rules at next-to-leading order in NRQCD approximation. Analitycal results for perturbative spectral density and gluon condensate contribution with account for summed Coulomb corrections are given. Estimates of various c-quark masses together with couplings and masses of lowest lying Bc-meson resonances are performed.
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