Comment on the generalized Gerasimov-Drell-Hearn sum rule in chiral perturbation theory
Journal Article
·
OSTI ID:754861
The author comments on the application of the chiral expansion to generalize the Gerasimov-Drell-Hearn sum rule for finite Q-squared. The observation, made by several authors, that the corrections to the leading order contributions are large and limit the applicability to a very small range in Q-squared are valid when considering the generalization of the sum rule for protons and neutrons, separately. However, when using the proton-neutron difference, the application of chiral perturbation theory may be expanded to substantially higher Q-squared.
- Research Organization:
- Thomas Jefferson National Accelerator Facility, Newport News, VA (US)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC05-84ER40150
- OSTI ID:
- 754861
- Report Number(s):
- DOE/ER/40150-1413; JLAB-PHY-00-03; nucl-th/0004001
- Country of Publication:
- United States
- Language:
- English
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