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Spin Structure of the Nucleon [electronic resource].

Published
Washington, D.C. : United States. Dept. of Energy. Office of Energy Research, 2004.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
170 Kilobytes pages : digital, PDF file
Additional Creators
Thomas Jefferson National Accelerator Facility (U.S.), United States. Department of Energy. Office of Energy Research, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Recent progress in the study of the nucleon structure at Jefferson Lab is presented. Precision measurements of spin asymmetry in the valence quark (large x) region are shown and the polarized quark distributions were extracted. The results were in disagreement with predictions from the leading-order pQCD calculations assuming hadron helicity conservation and revealed the importance of the quark orbital angular momentum. Results on sum rules and moments of the nucleon spin structure functions in the low to intermediate Q² range are also presented. They provide a bridge between the quark-gluon picture of the nucleon and the coherent hadronic picture. In particular, at low Q² the results were compared with Chiral Perturbation Theory calculations. Other experiments are also briefly discussed.
Report Numbers
E 1.99:jlab-phy-04-8
E 1.99: doe/er/40150-2610
doe/er/40150-2610
jlab-phy-04-8
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Note
Published through SciTech Connect.
01/01/2004.
"jlab-phy-04-8"
" doe/er/40150-2610"
Hirschegg 2004: Probing Nuclei and Nucleons With Electrons and Photons, Hirschegg (AT), 01/11/2004.
Jian-Ping Chen.
Funding Information
AC05-84ER40150
View MARC record | catkey: 14711298