The $\rho -\pi$ Puzzle of J/ψand ψ' Decays

Abstract

The recent BES Collaboration data on $ψ' \ra PV$, particularly the isospin violating mode $ψ' \ra π^0 ω^0$ and finding of a finite number for $B(ψ' \ra K^{*0}\bar{K}^0)$, enable us now to deal more precisely about the challenges to theory concerning this extraordinary and remarkable so called $\rho -\pi$ Puzzle of $J/\psi$ and ${\psi }^{\prime }$ Decays. In terms of existing data, and deploying the simplest phenomenology, measurement of $ψ' \ra π^+π^-$ and whether a finite number for the $K^{\ast +}{K}^{-}$ mode might require a significantly larger accumulation of data, remain interesting questions.

9pages, added reference, typos, and very slight change in text, LATEX format

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