Comment on the generalized Gerasimov-Drell-Hearn sum rule in chiral perturbation theory
rep-no: JLAB-PHY-00-03
Helicity
grantno: AC05-84ER40150
osti: 754861
Four Momentum Transfer
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.
Structure Functions
Protons
Perturbation Theory
294 Kilobytes pages
rep-no: nucl-th/0004001
United States. Department of Energy. Office of Energy Research.
Sum Rules
Other Information: PBD: 1 Mar 2000
rep-no: DOE/ER/40150-1413
72 Physics Of Elementary Particles And Fields
2000-03-01
Corrections
Spin
Neutrons
Burkert, Volker D.
ark: ark:/67531/metadc708041
Thomas Jefferson National Accelerator Facility (U.S.)
Chirality