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Q2 Evolution of the Neutron Spin Structure Moments using a He-3 Target

Amarian, M and Fissum, Kevin LU (2004) In Physical Review Letters 92.
Abstract
We have measured the spin structure functions g1 and g2 of 3He in a double-spin experiment by inclusively scattering polarized electrons at energies ranging from 0.862 to 5.058 GeV off a polarized 3He target at a 15.5° scattering angle. Excitation energies covered the resonance and the onset of the deep inelastic regions. We have determined for the first time the Q2 evolution of 1(Q2)=g1(x,Q2)dx, 2(Q2)=g2(x,Q2)dx, and d2(Q2)=x2[2g1(x,Q2)+3g2(x,Q2)]dx for the neutron in the range 0.1Q20.9 GeV2 with good precision. 1(Q2) displays a smooth variation from high to low Q2. The Burkhardt-Cottingham sum rule holds within uncertainties and d2 is nonzero over the measured range.
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review Letters
volume
92
publisher
American Physical Society
external identifiers
  • Scopus:8644233025
ISSN
1079-7114
DOI
10.1103/PhysRevLett.92.022301
language
English
LU publication?
yes
id
ab1f40e1-1e01-4c47-bbfc-66593e985f99 (old id 713551)
date added to LUP
2007-12-11 13:18:16
date last changed
2016-11-27 04:34:32
@misc{ab1f40e1-1e01-4c47-bbfc-66593e985f99,
  abstract     = {We have measured the spin structure functions g1 and g2 of 3He in a double-spin experiment by inclusively scattering polarized electrons at energies ranging from 0.862 to 5.058 GeV off a polarized 3He target at a 15.5° scattering angle. Excitation energies covered the resonance and the onset of the deep inelastic regions. We have determined for the first time the Q2 evolution of 1(Q2)=g1(x,Q2)dx, 2(Q2)=g2(x,Q2)dx, and d2(Q2)=x2[2g1(x,Q2)+3g2(x,Q2)]dx for the neutron in the range 0.1Q20.9 GeV2 with good precision. 1(Q2) displays a smooth variation from high to low Q2. The Burkhardt-Cottingham sum rule holds within uncertainties and d2 is nonzero over the measured range.},
  author       = {Amarian, M and Fissum, Kevin},
  issn         = {1079-7114},
  language     = {eng},
  publisher    = {ARRAY(0x8e814f8)},
  series       = {Physical Review Letters},
  title        = {Q<sup>2</sup> Evolution of the Neutron Spin Structure Moments using a He-3 Target},
  url          = {http://dx.doi.org/10.1103/PhysRevLett.92.022301},
  volume       = {92},
  year         = {2004},
}