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

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 $J/\psi \to a_0$ transition is evaluated at the level of $3\cdot 10^{-3}$.

3 pages, revtex4 class, 2 eps-figures; reference, comment and acknowledgement added

References in corpus (3)

• Big-Bang nucleosynthesis (Particle Data Group mini-review)
• The Cosmological Parameters 2006
• Study of electromagnetic decay of $J/\psi$ and ${\psi }^{\prime }$ to vector and pseudoscalar

Cited by in corpus (2)

• Observation of $J/\psi \to \gamma \eta {\pi }^0$
• Amplitude Analysis of the Isospin-Violating Decay $J/\psi \to \gamma \eta {\pi }^0$