周边手征动力学的量子力学图像
Quantum-mechanical picture of peripheral chiral dynamics
摘要：
在手征有效场论中计算了核子的周边横向电荷密度和磁化强度密度。密度表示在第一个量子化的形式，作为手征光前波函数描述的核子软π介子核子中间态的过渡的重叠积分。π介子的轨道运动在横极化核子中引起了很大的左右不对称性。这种效应证明了手征动力学[π介子动量k = O（M_pi）]的相对论性质，并且可以在低动量传递的形状因子测量中观察到。
英文摘要：
The nucleon's peripheral transverse charge and magnetization densities are computed in chiral effective field theory. The densities are represented in first-quantized form, as overlap integrals of chiral light-front wave functions describing the transition of the nucleon to soft pion-nucleon intermediate states. The orbital motion of the pion causes a large left-right asymmetry in a transversely polarized nucleon. The effect attests to the relativistic nature of chiral dynamics [pion momenta k = O(M_pi)] and could be observed in form factor measurements at low momentum transfer.
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