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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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