标题： 从有限的 p(γ,K+)Λ 数据集提取 N* 信息 显示英文标题

标题： Extraction of N* information from the limited p(gamma,K+)Lambda data set

摘要： 核子共振信息通常通过将强子动力学模型计算与数据拟合来获得，其中模型参数如共振耦合常数是拟合过程中的自由参数。 对于数据集有限的反应，例如 p(gamma, K+)Lambda，不仅由于理论不确定性，还由于拟合过程中的技术困难，会导致可靠 N* 信息提取的复杂性。 在本文中，我们概述了一种基于遗传算法的拟合策略，并说明了可能出现的模糊性类型。 显示英文摘要

摘要： Nucleon resonance information is often obtained from fitting hadrodynamical model calculations to data, where model parameters such as resonance coupling constants are the free parameters in the fitting procedure. For reactions with a limited data set, such as p(gamma, K+)Lambda, complications in the extraction of reliable N* information occur not only through theoretical uncertainties, but also due to technical difficulties in the fitting procedure. In this article we outline a fitting strategy based on a genetic algorithm and illustrate the kind of ambiguities which can arise.