论文标题
振幅和截断的部分波分析结合了：一种新颖的，几乎与理论无关的单通道方法
Amplitude- and truncated partial-wave analyses combined: A novel, almost theory-independent single-channel method for extracting photoproduction multipoles directly from measured data
论文作者
论文摘要
将振幅和截断的部分波分析组合成单个过程，并开发了一种新颖的，几乎与理论无关的单渠道方法，用于直接从测量数据中提取多物。实际上，我们创建了一个两步过程，该过程适合相同的数据库：在第一步中，我们执行了一个独立的振幅分析，通过约束振幅阶段可以实现连续性，然后将第一步的结果视为第二步的限制，其中完成了约束，独立，独立，截断的部分波波分析。该方法已在全世界的数据收集中测试，以$η$光生效，并且获得的配合物非常好。研究了对振幅阶段不同可能选择的敏感性，并且证明由于数据库不完整，目前的数据库对显着的相变不敏感。建议进行新的测量以解决问题。
Amplitude- and truncated partial-wave analyses are combined into a single procedure and a novel, almost theory-independent single-channel method for extracting multipoles directly from measured data is developed. In practice, we have created a two-step procedure which is fitted to the same data base: in the first step we perform an energy independent amplitude analysis where continuity is achieved by constraining the amplitude phase, and the result of this first step is then taken as a constraint for the second step where a constrained, energy independent, truncated partial-wave analysis is done. The method is tested on the world collection of data for $η$ photoproduction, and the obtained fit-results are very good. The sensitivity to different possible choices of amplitude phase is investigated and it is demonstrated that the present data base is insensitive to notable phase changes, due to an incomplete database. New measurements are recommended to remedy the problem.
