论文标题
$ e^+e^ - \ to f_1（1285）π^+π^ - $和更高的$ρ$ -Meson激发的广泛共振结构
Broad resonance structure in $e^+e^-\to f_1(1285)π^+π^-$ and higher $ρ$-meson excitations
论文作者
论文摘要
最近，在分析$ e^+e^ - \至f_1（1285）π^+π^ - $过程时，巴巴尔合作报告了2 GEV附近的宽泛共振结构，这提供了一个很好的机会来研究更高的$ρ$ -Mesonic状态。当考虑$ρ（1900）$和$ρ（2150）$的贡献时，可以很好地描绘出$ e e^+e^ - \ to f_1（1285）π^+π^ - $ 2 GEV的实验数据，可以很好地描绘出2 GEV，尤其是在观察到的$ e^+e^+e^+e^to f_1（1285）的范围内的广泛共振结构，目前的工作。此外，我们还指出了$ e^+e^ - \ to f_1（1285）π^+π^ - $ process的$ρ（5s）$ 2.5 GEV的可能信号。获得的结果可能会提供一个有价值的提示，以识别更高的$ρ$介子，这将是BESIII和Belle II实验的新任务，并积累了更高的精度数据。
Recently, the BaBar Collaboration reported a broad resonance structure near 2 GeV when analyzing the $e^+e^-\to f_1(1285)π^+π^-$ process, which provides a good opportunity to study the higher $ρ$-mesonic states. When considering the $ρ(1900)$ and $ρ(2150)$ contributions, the experimental data of the cross section of $e^+e^-\to f_1(1285)π^+π^-$ around 2 GeV can be well depicted, especially the observed broad resonance structure in $e^+e^-\to f_1(1285)π^+π^-$ containing two substructures is suggested by the present work. Additionally, we also indicate a possible signal of $ρ(5S)$ around 2.5 GeV in the $e^+e^-\to f_1(1285)π^+π^-$ process. The obtained result may provide a valuable hint to identify higher $ρ$ mesons, which will be a new task for the BESIII and Belle II experiments with the accumulation of higher precision data.
