Isospin Symmetry Breaking in ρ\toπγDecay

Xiao-Jun Wang, Ji-Hao Jiang, Mu-Lin Yan

In terms of effective field theory and mixed propagator approach, we show that there is a larger hidden effect of isospin breaking in ${\rho }^0\to {\pi }^0\gamma$ decay due to an $\omega$ exchange, $ρ^…