论文标题
标量diquark模型中的潜在线性和角动量
Potential linear and angular momentum in the scalar diquark model
论文作者
论文摘要
我们在电势线性和角动量的标量diquark模型中提出了一个分析性的两循环计算，该模型定义为线性和角动量的Jaffe-Manohar和JI概念之间的差异。正如奇偶校验和时间反向对称性所预期的那样，直接计算证实了潜在的横向动量与平均夸克横向动量的Jaffe-Manohar（或规范）的定义相吻合，也称为Quark Sivers Shing。我们检查了在Suvers不对称起源的初始/最终状态相互作用是否还可以在标量diquark模型中产生潜在的角动量。
We present an analytic two-loop calculation within the scalar diquark model of the potential linear and angular momenta, defined as the difference between the Jaffe-Manohar and Ji notions of linear and angular momenta. As expected by parity and time-reversal symmetries, a direct calculation confirms that the potential transverse momentum coincides with the Jaffe-Manohar (or canonical) definition of average quark transverse momentum, also known as the quark Sivers shift. We examine whether initial/final-state interactions at the origin of the Sivers asymmetry can also generate a potential angular momentum in the scalar diquark model.
