A Derivative of the Gerasimov-Drell-Hearn Sum Rule
Journal Article
·
OSTI ID:827489
We derive a sum rule which establishes a linear relation between a particle's anomalous magnetic moment and a quantity connected to the photoabsorption cross-section. This quantity cannot be measured directly. However, it can be computed within a given theory. As an example, we demonstrate validity of the sum rule in QED at tree level---the renowned Schwinger's correction to the anomalous magnetic moment is readily reproduced. In the case of the strong interactions, we also consider the calculation of the nucleon magnetic moment within chiral theories.
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC05-84ER40150
- OSTI ID:
- 827489
- Report Number(s):
- JLAB-THY-04-250; DOE/ER/40150-2823; TRN: US0403535
- Resource Relation:
- Other Information: No journal information given for this preprint; PBD: 1 Aug 2004
- Country of Publication:
- United States
- Language:
- English
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