用Jülich-Bonn-Washington模型对π介子和η介子电产生的耦合通道分析
Coupled-channel analysis of pion- and eta-electroproduction with the Jülich-Bonn-Washington model
摘要：
首次联合分析了π介子和eta电产生数据，最高可达1.6 GeV的质心能量。该框架是一个动态耦合通道模型，基于最近的Jülich-Bonn-Washington对相同能量范围的π介子电产生数据的分析。比较了一些单通道eta电生产适合。通过比较可比的拟合质量的多极，我们发现这些幅度很好地确定在近阈值区域，而其他人将需要在扩展的能量范围内的拟合。
英文摘要：
Pion and eta electroproduction data are jointly analyzed for the first time, up to a center-of-mass energy of 1.6 GeV. The framework is a dynamical coupled-channel model, based on the recent Jülich-Bonn-Washington analysis of pion electroproduction data for the same energy range. Comparisons are made to a number of single-channel eta electroproduction fits. By comparing multipoles of comparable fit quality, we find some of these amplitudes are well determined over the near-threshold region, while others will require fits over an extended energy range.
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