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arXiv 0806.3679hep-ph
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氘电磁形状因子的唯象拉格朗日方法

Phenomenological Lagrangian approach to the electromagnetic deuteron form factors

Yubing Dong, Amand Faessler, Thomas Gutsche, Valery E. Lyubovitskij

摘要:

采用唯象拉格朗日方法研究了氘核的电磁性质。氘核被认为是质子和中子的弱束缚态。我们构造了一个一般形式的电磁一体和二体跃迁算符的核子场,然后使用它的电磁氘核形状因子的计算。其中一个二体算符负责解释四极矩形状因子。我们表明,在我们的方法的数据上的氘核形状因子,以及对微分截面的弹性电子-氘核散射很好地解释。

英文摘要:

A phenomenological Lagrangian approach is employed to study the electromagnetic properties of the deuteron. The deuteron is regarded as a weakly bound state of the proton and neutron. We construct a general form for the electromagnetic one- and two-body transition operators formulated in terms of the nucleon fields, which are then used in the calculation of the electromagnetic deuteron form factors. One of the two-body operators is responsible for explaining the quadrupole moment form factor. We show that in our approach the data on the deuteron form factors as well as on the differential cross section of elastic electron-deuteron scattering are well explained.

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