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FIZIKA B 20 (2011) 4, 287-302
 
LONGITUDINAL SPIN STRUCTURE AT COMPASS
Y. BEDFER
on behalf of the COMPASS collaboration
CEA/IRFU, Saclay, France
E-mail address: Yann.Bedfer@cern.ch
Received 1 February 2011; Accepted 14 December 2011
Online 13 February 2012
COMPASS is a fixed-target experiment at CERN's
Super-Proton-Synchrotron. Part of its physics program is
dedicated to the spin structure of the nucleon, which it
studies with a 160 GeV polarized muon beam and polarized
targets. An overview of its measurements performed with
longitudinal target polarization is given. In particular,
recent results, concerning the gluon polarization, the
separation of the contributions of the individual quark
flavors and the test of the Bjorken sum rule, are presented.
PACS numbers: 13.60.-r, 13.88.+e, 14.20.Dh
UDC 539.125, 539.171
Keywords: nucleon spin structure, longitudinal target polarization,
polarized 160 GeV muon beam, gluon polarization, Bjorken sum rule
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