Spin asymmetry and GDH sum rule for real and virtual photons for the deuteron

被引：4

作者：

Arenhövel, H ^{[1
]}

Fix, A ^{[1
]}

Schwamb, M ^{[1
]}

机构：

[1] Univ Mainz, Inst Kernphys, D-55099 Mainz, Germany

来源：

GDH 2004: Proceedings of the Third International Symposium on the Gerasimov-Drell-Hearn Sum Rule and Its Extensions | 2005年

关键词：

D O I：

10.1142/9789812702111_0040

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

An explicit evaluation of the spin asymmetry of the deuteron and the associated GDH sum rule is presented which includes disintegration, single and double pion and eta production. For the GDH integral a large cancellation is found between the disintegration channel and the meson production channels. Furthermore, first results for the contribution of the disintegration channel to the generalized GDH integral at constant four-momentum transfer reveal a dominance of the isovector M1 transition to the S-1(0)-state near threshold resulting in a negative contribution with a minimum around Q(2) approximate to 0.2 fm(-2) which is driven by the nucleon anomalous isovector magnetic moment.

引用

页码：294 / 303

页数：10

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