Deep Inelastic Scattering of Polarized Electrons by Polarized ³He and the Study of the Neutron Spin Structure

Authors

P. L. Anthony
R. G. Arnold
H. R. Band
H. Borel
P. E. Bosted
V. Breton
G. D. Cates
T. E. Chupp
F. S. Dietrich
J. Dunne
R. Erbacher
J. Felbauum
H. Fonvielle
R. Gearhart
R. Holmes
E. W. Hughes
J. R. Johnson
D. Kawall
C. Keppel
S. E. Kuhn, Old Dominion UniversityFollow
R. M. Lombard-Nelsen
J. Marroncle
T. Maruyama
W. Meyer
Z.- E. Meziani
H. Middleton
J. Morgenstern
N. R. Newbury
G. G. Petratos
R Pitthan
R. Prepost
Y. Robin
S. E. Rock
S. H. Rokni
G. Shapiro
T. Smith
P. A. Souder
M. Spengos
F. Staley
L. M. Stuart
Z. M. Szlata
Y. Terrien
A. K. Thompson
J. L. White
M. Woods
J. Xu
C. C. Young
G. Zaplac
E142 Collaboration

Document Type

Article

Publication Date

1996

DOI

10.1103/PhysRevD.54.6620

Publication Title

Physical Review D

Volume

54

Issue

11

Pages

6620-6650

Abstract

The neutron longitudinal and transverse asymmetries A₁ⁿ and A₂ⁿ have been extracted from deep inelastic scattering of polarized electrons by a polarized ³He 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 g₁ⁿ (x,Q²) and g₂ⁿ(x,Q²) over the range 0.032 of 2 (GeV/c)². The data are used for the evaluation of the Ellis-Jaffe and Bjorken sum rules. The neutron spin structure function g₁ⁿ(x,Q²) is small and negative within the range of our measurement, yielding an integral f_0.03^0.6g₁ⁿ(x)dx = -0.028 ± 0.006 (stat) +/- 0.006 (syst). Assuming Reggae behavior at low x, we extract 𝛤 ₁ⁿ = f₀¹g¹_n(x)dx = -0.031 ± 0.006 (stat) ± 0.009 (syst). Combined with previous proton integral results from SLAC experiment E143, we find 𝛤₁^p - 𝛤₁ⁿ = 0.160 ± 0.015 in agreement with the Bjorken sum rule prediction 𝛤₁^p - 𝛤₁ⁿ = 0.176 ± 0.008 at a Q² value of 3 (GeV/c)² evaluated using 𝛼_s = 0.32 ± 0.05.

Comments

© 1996 The American Physical Society

"Yes, the author or the author's employer may use all or part of the APS published article, including the APS-prepared version (e.g., the PDF from the online journal) without revision or modification, on the author's or employer's website as long as a fee is not charged. If a fee is charged, then APS permission must be sought. In all cases, the appropriate bibliographic citation and notice of the APS copyright must be included."

Publisher's version available at: https://doi.org/10.1103/PhysRevD.54.6620

Original Publication Citation

Anthony, P.L., Arnold, R.G., Band, H.R. ... Kuhn, S.E., Young, CC., Zapalac, G., E142 Collaboration (1996). Deep inelastic scattering of polarized electrons by polarized ³He and the study of the neutron spin structure Physical Review D, 54(11), 6620-6650. https://doi.org/10.1103/PhysRevD.54.6620

ORCID

0000-0003-2243-6836 (Kuhn)

Repository Citation

Anthony, P. L.; Arnold, R. G.; Band, H. R.; Borel, H.; Bosted, P. E.; Breton, V.; Cates, G. D.; Chupp, T. E.; Dietrich, F. S.; Dunne, J.; Erbacher, R.; Felbauum, J.; Fonvielle, H.; Gearhart, R.; Holmes, R.; Hughes, E. W.; Johnson, J. R.; Kawall, D.; Keppel, C.; Kuhn, S. E.; Lombard-Nelsen, R. M.; Marroncle, J.; Maruyama, T.; Meyer, W.; Meziani, Z.- E.; Middleton, H.; Morgenstern, J.; Newbury, N. R.; Petratos, G. G.; Pitthan, R; Prepost, R.; Robin, Y.; Rock, S. E.; Rokni, S. H.; Shapiro, G.; Smith, T.; Souder, P. A.; Spengos, M.; Staley, F.; Stuart, L. M.; Szlata, Z. M.; Terrien, Y.; Thompson, A. K.; White, J. L.; Woods, M.; Xu, J.; Young, C. C.; Zaplac, G.; and E142 Collaboration, "Deep Inelastic Scattering of Polarized Electrons by Polarized ³He and the Study of the Neutron Spin Structure" (1996). Physics Faculty Publications. 472.
https://digitalcommons.odu.edu/physics_fac_pubs/472