粲夸克偶素强衰变中新的反常表现

NEW ANOMALY IN HADRONIC DECAYS OF CHARMONIUM

北京谱仪合作组利用其在北京正负电子对撞机上采集的３７９万ψ（２Ｓ）数据研究了ψ（２Ｓ）新的强衰变过程．在末态为矢量·张量介子对ωｆ２，ρａ２。

A sample of 3 79 million ψ(2S) events produced in the BES detector at the BEPC collider is used to study new hadronic decays of the ψ(2S).Measurements of ψ(2S) decays to vector plus tensor meson final states,ωf 2,ρa 2,K 0 *0 2,and f′ 2(1525),reveal significant discrepancies with theoretical expectations.