$C$ -Conserving Decay $η \to π^{0} e^{+} e^{-}$ in a Vector-Meson-Dominant Model

The decay

η \to π e^{+} e^{-}

through a

C

-conserving, two-photon intermediate state is studied in a vector-meson-dominant model. The branching ratio

\frac{Γ (η \to π e^{+} e^{-})}{Γ (η \to π γ γ)}

is found to be ≈

10^{- 5}

. If, in addition, a quark model is assumed for the photon-pseudoscalar-vector-meson vertex, we obtain a value of 1.3×

10^{- 5}

eV for the decay width of

η \to π e^{+} e^{-}

. General features of the decay spectrum with respect to the sum and difference of the electron and positron energies in the

η

rest frame are discussed.

This publication has 9 references indexed in Scilit:

C-Conserving Decayη→π0e+e−in a Vector-Meson-Dominant Model