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arXiv · hep-ph/0702062

Isospin breaking in scalar and pseudoscalar channels of radiative $J/ψ$-decays

V. V. Kiselev
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Abstract

In the framework of simple assumption on factorizing a mixing of vector state with isoscalar components in effective amplitudes of isospin breaking caused by the electromagnetic quark current, a branching fraction of radiative $J/ψ\to a_0$ transition is evaluated at the level of $3\cdot 10^{-3}$.

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V. V. Kiselev. 2007-02-08. Isospin breaking in scalar and pseudoscalar channels of radiative $J/ψ$-decays. https://doi.org/10.1134/s1063778808110136

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