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hep-ph2004★ 1 cited
Gluon condensate in charmonium sum rules for the axial-vector current
A. Samsonov
The charmonium sum rules for the axial-vector current are considered. The three-loop perturbative corrections, operators up to 8 dimension and perturbative corrections to the lowes…
hep-ph1998
Decay constant of eta-meson from QCD sum rule
A. V. Samsonov
Decay constant of eta-meson f is calculated on the basis of the QCD sum rule method. An instanton contribution is taken into account. The result is f = 0.17 GeV.
hep-ph1997
Forward scattering amplitude of the virtual longitudinal photon in QED
A. V. Samsonov
Forward scattering amplitude of the virtual longitudinal photon at zero energy on electron in QED in the limit of small photon virtualities is calculated. The first radiation corre…