论文标题
E^+e^ - \ to p \ bar {p}π^0横截面线形状的改进描述和ψ（3770）和ψ（4230）\ to p \ bar {p}π^0上的更为严格的约束
Improved description of e^+e^- \to p\bar{p}π^0 cross section line shape and more stringent constraints on ψ(3770) and ψ(4230) \to p\bar{p}π^0
论文作者
论文摘要
通过使用E^+E^ - \的横截面至P \ bar {p}π^0在3.65至4.60 GEV的质量中心能量下测量，我们发现该线形状很好地与纯连续体生产一致，由功率定律函数参数性，并且较少的是ψ（3770）和ψ（3770）和ψ（4230）的意义， 0.4σ。我们将更严格的约束在charmonium状态的无魅力衰减上，ψ（3770）和炭状状态ψ（4230）（4230），比以前的测量中的p \ bar {p}π^0。数据还用于估计p \ bar {p} \至π^0ψ（3770）和p \ bar {p} \至π^0ψ（4230）的横截面，这对于规划熊猫实验的数据获取数据至关重要。
By using the cross sections of e^+e^- \to p\bar{p}π^0 measured at the center-of-mass energies from 3.65 to 4.60 GeV, we find that the line shape well agrees with pure continuum production parametrized by a power law function and the significance of both ψ(3770) and ψ(4230) \to p\bar{p}π^0 is less than 0.4σ. We set more stringent constraints on the charmless decays of the charmonium state, ψ(3770), and the charmoniumlike state, ψ(4230), to p\bar{p}π^0 than in previous measurements. The data are also used to estimate the cross sections of p\bar{p} \to π^0ψ(3770) and p\bar{p} \to π^0ψ(4230) that are essential for planning the data taking of the PANDA experiment.
