Eur. Phys. J. A 14, 219-224 (2002)
Isospin symmetry breaking in decayX.-J. Wang1, J.-H. Jiang2 and M.-L. Yan2, 3
1 Institution of Theoretical Physics, Beijing, 100080, PRC
2 Center for Fundamental Physics, University of Science and Technology of China Hefei, Anhui 230026, PRC
3 CCAST(World Lab), P.O. Box 8730, Beijing, 100080, PRC
(Received: 7 January 2002 / Revised version: 25 March 2002 Communicated by V.V. Anisovich)
In terms of effective field theory and mixed-propagator approach, we show that there is a larger hidden effect of isospin breaking in decay due to a exchange, . The branching ratio is predicted as , which is much larger than Particle Data Group's datum and one of charged mode, .
14.40.Cs - Other mesons with S=C=0, mass < 2.5 GeV.
13.25.Jx - Decays of other mesons.
12.40.Vv - Vector-meson dominance.
13.40.Hq - Electromagnetic decays.
© Società Italiana di Fisica, Springer-Verlag 2002