Abstract: | Using $(106pm4) imes 10^6$ $psip$ events accumulated with the BESIII
detector at the BEPCII $e^+e^-$ collider, we present measurements of the
branching fractions for psi’ decays to $K^{+}K^{-}pi^{0}$ and
$K^{+}K^{-}eta$. In these final states, the decay $psi’ o
K_2^{*}(1430)^+K^-+c.c.$ is observed for the first time, and its branching
fraction is measured to be $(7.12pm{0.62}{
m (stat.)}^{+1.13}_{-0.61}{
m
(syst.)}) imes 10^{-5}$, which indicates a violation of the helicity selection
rule in $psip$ decays. The branching fractions of $psi’ o
K^*(892)^+K^-+c.c., phieta, phipi^0$ are also measured. The measurements
are used to test the QCD predictions on charmonium decays. |