固定PDMATHAAB解析度下质子光生$π^0$的单能分波分析
Single-Energy Partial Wave Analysis for $π^0$ Photoproduction on Proton with Fixed-$t$ Analyticity Imposed
摘要:
高精度数据的$γp \to π^0 p$反应从其阈值高达$W=2$ ~GeV已被用来进行单能分波分析与极小模型的依赖。通过在迭代过程中对固定的$t$解析性施加约束,实现了能量的连续性。反应模型仅在第一次迭代中用作起点。我们证明,与此程序的分波振幅可以得到的初始模型的假设只显示一个最小的依赖。
英文摘要:
High precision data of the $γp \to π^0 p$ reaction from its threshold up to $W=2$~GeV have been used in order to perform a single-energy partial wave analysis with minimal model dependence. Continuity in energy was achieved by imposing constraints from fixed-$t$ analyticity in an iterative procedure. Reaction models were only used as starting point in the very first iteration. We demonstrate that with this procedure partial wave amplitudes can be obtained which show only a minimal dependence on the initial model assumptions.
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