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VOLUME 30 (1979) | ISSUE 8 | PAGE 546
New approach to radiative transitions in charmonium
Radiative decays of the type J /φ —> η€ γ, φ' —» χ0γ are considered within the framework of the dispersion theory of charmonium. It is shown that for some decays of this type the J /ф—dominance is parametrically accurate—corrections to it are S0[as(mc)] and are negligibly small. The predicted width of J/φ~^ηαγ amounts to ~3.2keV if m„ = 2.977 GeV. */<■