Abstract
We show that the asymmetry in $e+\overline{e}\ensuremath{\rightarrow}2\ensuremath{\pi},3\ensuremath{\pi}$, due to interference between one-photon and two-photon terms is quite large near the $f$, ${A}_{1}$, and ${A}_{2}$ resonance positions, but goes through a zero. The analysis of this asymmetry can yield important information about the resonances and theories describing them.
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