Journal
PROGRESS IN PARTICLE AND NUCLEAR PHYSICS
Volume 67, Issue 2, Pages 251-259Publisher
ELSEVIER
DOI: 10.1016/j.ppnp.2011.12.027
Keywords
Nucleon structure; Spin; QCD; Partons; Perturbation theory
Categories
Funding
- US Department of Energy [DE-AC02-98CH10886]
- CONICET
- ANPCyT
- UBACyT
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We discuss some recent developments concerning the nucleon's helicity parton distribution functions: new preliminary data from jet production at RHIC suggest for the first time a non-vanishing polarization of gluons in the nucleon. SIDIS measurements at COMPASS provide better constraints on the strange and light sea quark helicity distributions. Single-longitudinal spin asymmetries in W-boson production have been observed at RHIC and will ultimately give new insights into the light quark and anti-quark helicity structure of the nucleon. (C) 2012 Elsevier B.V. All rights reserved.
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