A. V. Samsonov
Abstract
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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.
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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.
Key concepts: Physics, Particle physics, Sum rule in quantum mechanics, Meson, Instanton, Quantum chromodynamics, Constant (computer programming), QCD sum rules