Polarized structure functions of proton and neutron and the Gerasimov-Drell-Hearn and Bjorken sum rules
Journal Article
·
· Phys Rev Lett
OSTI ID:758743
The value of power corrections to the integrals of the polarization structure functions of proton and neutron {integral} g1{sub p,n}(x)dx measured by the EMC, SMC, and E142 groups, is determined based on a model which accounts for higher twist terms, has the correct asymptotic behavior at large Q{sup 2} and satisfies the Gerasimov-Drell-Hearn sum rule at Q{sup 2}=0. The contribution of resonances up to W=1.8GeV at Q{sup 2}=0 is taken into account based on the analysis of electroproduction data. It is shown that when taking into account these higher twit terms, the experimental data agree with the Bjorken sum rule and part of the proton spin projection carried by quarks, is consistent with the natural estimate of {approximately}50%.
- 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:
- 758743
- Report Number(s):
- CEBAF-PR-93-034; DOE/ER/40150-1726
- Journal Information:
- Phys Rev Lett, Journal Name: Phys Rev Lett
- Country of Publication:
- United States
- Language:
- English
Similar Records
Polarized structure functions of proton and neutron and the Gerasimov-Drell-Hearn and Bjorken Sum Rules
Comment on the generalized Gerasimov-Drell-Hearn sum rule in chiral perturbation theory
What do we know about the Q{sup 2} evolution of the Gerasimov-Drell-Hearn sum rule?
Journal Article
·
Mon Oct 31 23:00:00 EST 1994
· JETP
·
OSTI ID:801735
Comment on the generalized Gerasimov-Drell-Hearn sum rule in chiral perturbation theory
Journal Article
·
Tue Feb 29 23:00:00 EST 2000
·
OSTI ID:754861
What do we know about the Q{sup 2} evolution of the Gerasimov-Drell-Hearn sum rule?
Technical Report
·
Thu Oct 01 00:00:00 EDT 1992
·
OSTI ID:10185974