QCD spin physics: Partonic spin structure of the nucleon

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 stra...

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Bibliographic Details
Published inProgress in particle and nuclear physics Vol. 67; no. 2; pp. 251 - 259
Main Authors de Florian, D., Sassot, R., Stratmann, M., Vogelsang, W.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.04.2012
Subjects
Nucleon structure
Partons
Perturbation theory
QCD
Spin
Perturbation theory
Nucleon structure
QCD
Partons
Spin
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Summary: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.
ISSN:0146-6410
1873-2224
DOI:10.1016/j.ppnp.2011.12.027