R. Gearhart
Stanford University
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Physical Review D | 1998
K. Abe; T. Akagi; P.L. Anthony; R. Antonov; R.G. Arnold; T. Averett; H. R. Band; J. M. Bauer; H. Borel; P. Bosted; Vincent Breton; J. Button-Shafer; J. P. Chen; T. E. Chupp; J. Clendenin; C. Comptour; K.P. Coulter; D. Crabb; M. Daoudi; F. S. Dietrich; J. Dunne; H. Dutz; R. Erbacher; J. Fellbaum; A. Feltham; H. Fonvieille; E. Frlez; D. Garvey; R. Gearhart; J. Gomez
Measurements are reported of the proton and deuteron spin structure functions g1 at beam energies of 29.1, 16.2, and 9.7 GeV and g2 at a beam energy of 29.1 GeV. The integrals of g1 over x have been evaluated at fixed Q**2 = 3 (GeV/c)**2 using the full data set. The Q**2 dependence of the ratio g1/F1 was studied and found to be small for Q**2>1 (GeV/c)**2. Within experimental precision the g2 data are well-described by the Wandzura-Wilczek twist-2 contribution. Twist-3 matrix elements were extracted and compared to theoretical predictions. The asymmetry A2 was measured and found to be significantly smaller than the positivity limit for both proton and deuteron targets. A2 for the proton is found to be positive and inconsistent with zero. Measurements of g1 in the resonance region show strong variations with x and Q**2, consistent with resonant amplitudes extracted from unpolarized data. These data allow us to study the Q**2 dependence of the first moments of g1 below the scaling region.
Physical Review D | 1996
P.L. Anthony; R.G. Arnold; H. R. Band; H. Borel; P. Bosted; V. Breton; G. D. Cates; T. E. Chupp; F. S. Dietrich; J. Dunne; R. Erbacher; J. Fellbaum; H. Fonvieille; R. Gearhart; R. Holmes; E. W. Hughes; J. R. Johnson; D. Kawall; C. Keppel; S. E. Kuhn; R. M. Lombard-Nelsen; Jacques Marroncle; T. Maruyama; W. Meyer; Z. E. Meziani; H. Middleton; J. Morgenstern; N. R. Newbury; G. G. Petratos; R. Pitthan
The neutron longitudinal and transverse asymmetries
IEEE Transactions on Nuclear Science | 1971
F. Herlach; R. McBroom; T. Erber; J. Murray; R. Gearhart
A^n_1
Nuclear Instruments and Methods in Physics Research | 1984
B. Cox; G. Hale; P.O. Mazur; R.L. Wagner; D.E. Wagoner; H. Areti; S. Conetti; P. Lebrun; Timothy A. Ryan; J.E. Brau; R. Gearhart
and
IEEE Transactions on Nuclear Science | 1982
A. N. Chu; M. A. Piestrup; P. F. Finman; R. H. Pantell; R. Gearhart
A^n_2
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1985
D.E. Wagoner; B. Cox; D.J. Judd; G. Hale; P.O. Mazur; C. T. Murphy; R. Rameika; F. Turkot; S. Conetti; M. Haire; P. Lebrun; C. Leroy; Timothy A. Ryan; L. Turnbull; R. Gearhart; S. Tzamarias
have been extracted from deep inelastic scattering of polarized electrons by a polarized
Nuclear Instruments and Methods in Physics Research | 1984
B. Cox; G. Hale; P.O. Mazur; R.L. Wagner; D.E. Wagoner; H. Areti; S. Conetti; P. Lebrun; Timothy A. Ryan; R. Gearhart
^3
Nuclear Instruments and Methods in Physics Research | 1982
J.E. Brau; J. Butler; W.M. Bugg; J.T. Carroll; C.V. Cautis; H.O. Cohn; G. Condo; S. Dado; F. Davenport; R. Diamond; R. Erickson; M. Ferguson; R.C. Field; L.R. Fortney; B. Franek; R. Gearhart; T. Glanzman; J. Goldberg; A.T. Goshaw; V. Hagopian; T. Handler; H.J. Hargis; E. Hart; D.Q. Huang; D.P. Kelsey; J. Lannutti; P.W. Lucas; K.C. Moffeit; T. Maruyama; A.P.T. Palounek
He target at incident energies of 19.42, 22.66 and 25.51 GeV. The measurement allows for the determination of the neutron spin structure functions
IEEE Transactions on Nuclear Science | 1984
D.E. Wagoner; B. Cox; D.J. Judd; G. Hale; P.O. Mazur; C. T. Murphy; R. Rameika; F. Turkot; S. Conetti; M. Haire; P. Lebrun; C. Leroy; Timothy A. Ryan; L. Turnbull; R. Gearhart; S. Tzamarias
g^n_1 (x,Q^2)
Review of Scientific Instruments | 1979
G. B. Rothbart; J. C. Sheppard; M. A. Piestrup; R. A. Powell; R. H. Pantell; R. Gearhart
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