Partial wave analysis of J/psi -> gamma eta eta

Ablikim, M^*; Achasov, M N; Albayrak, O; Ambrose, D J; An, F F; An, Q; Bai, J Z; Ferroli, R Baldini; Ban, Y; Becker, J; Bennett, J V; Berger, N; Bertani, M; Bian, J M; Boger, E; Bondarenko, O; Boyko, I; Briere, R A; Bytev, V; Cai, H; Cai, X; Cakir, O; Calcaterra, A; Cao, G F; Cetin, S A; Chang, J F; Chelkov, G; Chen, G; Chen, H S; Chen, J C; Chen, M L; Chen, S J; Chen, X; Chen, Y B; Cheng, H P; Chu, Y P; Cronin Hennessy, D; Dai, H L; Dai, J P; Dedovich, D; Deng, Z Y; Denig, A

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摘要

Based on a sample of 2.25 x 10(8) J/psi events collected with the BESIII detector at BEPCII, a full partial wave analysis on J/psi -> gamma eta eta was performed using the relativistic covariant tensor amplitude method. The results show that the dominant 0( ) and 2( ) components are from the f(0)(1710), f(0)(2100), f(0)(1500), f(2)'(1525), f(2)(1810) and f(2)(2340). The resonance parameters and branching fractions are also presented.

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RADIATIVE DECAYSMESONSPI(0)PI(0)