论文标题
部分可观测时空混沌系统的无模型预测
Neutron size from high energy scattering data
论文作者
论文摘要
Alvarado，Aranda和Bonilla提出了一个子GEV u（1）R仪表模型，以解释质子电荷半径差异。他们的模型假设符号u（1）r电荷分配是核子中上下夸克的分配。我指出，这可能会导致中子和质子质量半径之间的差异，这与现有的P-P和N-P散射数据相矛盾。使用现有的中子和质子散射数据，我表明中子和质子质量半径相等约2％。这构成了试图通过修改夸克耦合来解释差异的模型的挑战。
Alvarado, Aranda, and Bonilla propose a sub-GeV U(1)R gauge boson model to explain the proton charge radius discrepancy. Their model assumes opposite sign U(1)R charge assignments for up and down quarks in the nucleon. I point out that might cause a difference between neutron and proton mass radii that contradicts existing p-p and n-p scattering data. Using existing neutron and proton scattering data I show that the neutron and proton mass radii are equal within about 2%. This constitutes a challenge to models that attempt to explain the discrepancy by modifying the quark couplings.
