The Spin Structure Function g2
We have measured the spin structure functions g{sub 2}{sup p} and g{sub 2}{sup d} over the kinematic range 0.02 {le} x {le} 0.8 and 0.7 {le} Q{sup 2} {le} 20 GeV{sup 2} by scattering 29.1 and 32.3 GeV longitudinally polarized electrons from transversely polarized NH{sub 3} and {sup 6}LiD targets. Our measured g{sub 2} approximately follows the twist-2 Wandzura-Wilczek calculation. The twist-3 reduced matrix elements d{sub 2}{sup p} and d{sub 2}{sup n} are less than two standard deviations from zero. The data are inconsistent with the Burkhardt-Cottingham sum rule. The Efremov-Leader-Teryaev integral is consistent with zero within our measured kinematic range.
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (US)
- DOE Contract Number:
- AC03-76SF00515
- OSTI ID:
- 812644
- Report Number(s):
- SLAC-PUB-9657; TRN: US0303458
- Resource Relation:
- Other Information: PBD: 27 Feb 2003
- Country of Publication:
- United States
- Language:
- English
Similar Records
Precision Measurement of the Proton and Deuteron Spin Structure Functions g{sub 2} and Asymmetry A{sub 2}
Precision Measurement of the Proton and Deuteron Spin Structure Functions g2
A Precise Measurement of the Spin Structure Functions G**P(2) G**D(2) from SLAC Experiment E155X
Technical Report
·
Wed Apr 24 00:00:00 EDT 2002
·
OSTI ID:812644
Precision Measurement of the Proton and Deuteron Spin Structure Functions g2
Technical Report
·
Thu Feb 27 00:00:00 EST 2003
·
OSTI ID:812644
A Precise Measurement of the Spin Structure Functions G**P(2) G**D(2) from SLAC Experiment E155X
Technical Report
·
Thu Dec 18 00:00:00 EST 2003
·
OSTI ID:812644