短时近似中的标度
Scaling in the short-time approximation
摘要：
本文简要地回顾了标度的概念及其在准弹性电子和中微子与原子核散射中的表现，然后介绍了在短时近似下标度的具体方法。我们发现，虽然两个核子电流显着增强横向电磁响应，他们不破坏标度，但实际上增强it. We提供的标度结果在短时间近似，验证了这一说法。增强的缩放不是"偶然的“--如参考文献~中所述。\cite{Benhar:2020jye} -而是反映了π交换相互作用和电流在准弹性制度中发挥的主导作用。
英文摘要：
We briefly review the concept of scaling and how it occurs in quasielastic electron and neutrino scattering from nuclei, and then the particular approach to scaling in the short-time approximation. We show that, while two-nucleon currents do significantly enhance the transverse electromagnetic response, they do not spoil scaling, but in fact enhance it. We provide scaling results obtained in the short-time approximation that verify this claim. The enhanced scaling is not ``accidental'' -- as claimed in Ref.~\cite{Benhar:2020jye} -- but rather reflects the dominant role played by pion exchange interactions and currents in the quasielastic regime.
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