标题： $J/ψ\to γηη$的部分波分析 显示英文标题

标题： Partial wave analysis of $J/ψ\to γηη$

摘要： 基于在BEPCII上使用BESIII探测器收集的$2.25\times 10^{8}$ $J/\psi$ 个事例，采用相对论协变张量振幅方法对$J/\psi\to\gamma\eta\eta$进行了完整的部分波分析。 结果表明，主导的$0^{++}$和$2^{++}$组件来自$f_0(1710)$、$f_0(2100)$、$f_0(1500)$、$f_2'(1525)$、$f_2(1810)$和$f_2(2340)$。 共振参数和分支比也已列出。 显示英文摘要

摘要： Based on a sample of $2.25\times 10^{8}$ $J/\psi$ events collected with the BESIII detector at BEPCII, a full partial wave analysis on $J/\psi\to\gamma\eta\eta$ 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.