Measurement of the Proton and Deuteron Spin Structure Functions g2 and Asymmetry A2
Journal Article
·
· Physics Letters B
OSTI ID:837872
We have measured the spin structure functions g{sub 2}{sup p} and g{sub 2}{sup d} and the virtual photon asymmetries A{sub 2}{sup p} and A{sub 2}{sup d} over the kinematic range 0.02 < x < 0.8 and 1.0 < Q{sup 2} {le} 30(GeV/c){sup 2} by scattering 38.8 GeV longitudinally polarized electrons from transversely polarized NH{sub 3} and {sup 6}LiD targets.The absolute value of A{sub 2} is significantly smaller than the {radical}R positivity limit over the measured range, while g{sub 2} is consistent with the twist-2 Wandzura-Wilczek calculation. We obtain results for the twist-3 reduced matrix elements d{sub 2}{sup p}, d{sub 2}{sup d} and d{sub 2}{sup n}. The Burkhardt-Cottingham sum rule integral (g{sub 2}(x)dx) is reported for the range 0.02 {le} x {le} 0.8.
- 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:
- 837872
- Report Number(s):
- JLAB-PHY-99-69; DOE/ER/40150-3214; hep-ex/9901006
- Journal Information:
- Physics Letters B, Journal Name: Physics Letters B Vol. 458
- Country of Publication:
- United States
- Language:
- English
Similar Records
Measurement of the Proton and Deuteron Spin Structure Functions g2 and Asymmetry A2
The Spin Structure Function g2
Precision Measurement of the Proton and Deuteron Spin Structure Functions g2
Technical Report
·
Tue Jan 05 19:00:00 EST 1999
·
OSTI ID:9948
The Spin Structure Function g2
Technical Report
·
Wed Feb 26 19:00:00 EST 2003
·
OSTI ID:812644
Precision Measurement of the Proton and Deuteron Spin Structure Functions g2
Technical Report
·
Wed Feb 26 19:00:00 EST 2003
·
OSTI ID:812643