The Drell-Hearn-Gerasimov sum-rule in QCD

被引：23

作者：

Bass, SD

机构：

[1] Inst. fur Theoretische Kernphysik, Universität Bonn, D-53115 Bonn

来源：

MODERN PHYSICS LETTERS A | 1997年 / 12卷 / 15期

关键词：

D O I：

10.1142/S0217732397001072

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Photoproduction spin sum-rules offer a new window on the spin structure of the nucleon that complements the information we can learn from polarized deep inelastic scattering experiments. We review the theory and present status of the Drell-Hearn-Gerasimov sum-rule in QCD, emphasizing the possible relation between the present ''discrepancy'' in this sum-rule and the nucleon's strangeness magnetic moment. In the case of an elementary electron or photon target (say at the NLC) the Drell-Hearn-Gerasimov sum-rule provides a test for physics beyond the minimal Standard Model.

引用

页码：1051 / 1067

页数：17

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