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Nucleon longitudinal spin structure at COMPASS

Yann Bedfer
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Abstract

The nucleon spin structure is studied at COMPASS via the measurement of the spin dependent properties of deep inelastic muon-deuteron scattering. Both inclusive and semi-inclusive observables are investigated, with the emphasis put on the latter. This allows to access, in particular, the gluon polarization ($ΔG/G$) and the flavor decomposition of the quark helicity distributions. Results from measurements with longitudinal target polarization are presented, as well as uncertainties expected from the first 3 years of data taking.

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Yann Bedfer. 2005-02-02. Nucleon longitudinal spin structure at COMPASS. https://doi.org/10.1016/j.nuclphysa.2005.03.109

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