Hadronic Decays of Charmonia From Besii

Abstract

Recent results on charmonia decays at BESII/BEPC are reported, including the observation of [Formula: see text], ψ′→Vector Tensor and ψ′→Vector Pseudoscalar for the measurement of the relative phase between the strong and electromagnetic decays of ψ′ and a test of the pQCD "12% rule" between ψ′ and J/ψ decays; the test of the color-octet mechanism via [Formula: see text] and [Formula: see text]; the first observation of χc0→f0(980)f0(980); and a study of the ψ′ and χcJ decays with [Formula: see text] in the final states.