Impact of the interference between the resonance and continuum amplitudes on vector quarkonia decay branching fraction measurements

Y. P. Guo, C. Z. Yuan

The measurement of the branching fraction of a heavy quarkonium decaying into light hadronic final state at $e^{+}{e}^{-}$ colliders is revisited. In $e^{+}{e}^{-}$ annihilation experiments, b…