Pion spectrum in decay of Psi'(3.7) to Psi(3.1).


The decay of Psi' --> Psi + pipi is described by a chiral epsilon model. The general features of the observed dipion spectrum are well reproduced. Comparison with the hadronic decay rho' --> rho + pipi indicates that the Psi'Psiepsilon coupling is relatively suppressed by a factor approximately 10(-2).

Cite this paper

@article{Schwinger1975PionSI, title={Pion spectrum in decay of Psi'(3.7) to Psi(3.1).}, author={J{\"{o}rg Schwinger and Kimball A. Milton and W. Y. Tsai and Lester L. DeRaad}, journal={Proceedings of the National Academy of Sciences of the United States of America}, year={1975}, volume={72 11}, pages={4216-7} }