介子电荷半径的模型无关与模型相关分析之比较
Comparison with model-independent and dependent analyses for pion charge radius
AI总结:
本文探索了用于分析介子电荷半径的模型无关方法的若干改进,并使用 $N_{f}=2+1$ 格点 QCD 数据,在考虑系统误差的情况下,与传统模型相关及原始模型无关方法进行了结果比较。
摘要:
传统上,有一种基于强子形状因子的拟合并附带某些模型假设来提取其电荷半径的方法。相比之下,一种完全不同的、不依赖于模型的方法已被提出。在本报告中,我们探索了对这种用于分析介子电荷半径的模型无关方法的若干改进。此外,我们使用三种不同方法:传统模型相关方法、原始模型无关方法以及我们改进的模型无关方法,比较了从 $m_π=0.51$ GeV 的 $N_{f}=2+1$ 格点 QCD 数据中获得的介子电荷半径结果。在此比较中,我们考虑了每次分析中估计的系统误差。
英文摘要:
Traditionally, there has been a method to extract the charge radius of a hadron based on the fits of its form factor with some model assumptions. In contrast, a completely different method has been proposed, which does not depend on the models. In this report, we explore several improvements to this model-independent method for analyzing the pion charge radius. Furthermore, we compare the results of the pion charge radius obtained from $N_{f}=2+1$ lattice QCD data at $m_π=0.51$ GeV using the three different methods: the traditional model-dependent method, the original model-independent method, and our improved model-independent method. In this comparison, we take into account systematic errors estimated in each analysis.
机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。