The European Physical Journal A

, Volume 31, Issue 4, pp 606–609

Spin structure function of deuteron g1d from COMPASS

QNP 2006

DOI: 10.1140/epja/i2006-10175-8

Cite this article as:
Korzenev, A. Eur. Phys. J. A (2007) 31: 606. doi:10.1140/epja/i2006-10175-8
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Abstract.

New results on the longitudinal inclusive spin asymmetry A1d in the range 1 < Q2 < 100(GeV/c)^2 and 0.004 < x < 0.7 are presented. From these results we derive the spin-dependent structure function g1d which we use to evaluate the scale-invariant flavor-singlet axial charge \( \hat{{a}}_{0}^{}\). The contribution of the measured region is evaluated by a QCD fit of the world data. The data were obtained by the COMPASS experiment at CERN using a 160GeV polarized muon beam scattered off a large double-cell polarized 6LiD target. The results are in agreement with those from previous experiments and improve considerably the statistical accuracy in the region x < 0.03.

PACS.

13.60.Hb Total and inclusive cross-sections (including deep-inelastic processes) 13.88.+e Polarization in interactions and scattering 

Copyright information

© Società Italiana di Fisica and Springer-Verlag 2007

Authors and Affiliations

  1. 1.Institute of Nuclear PhysicsMainz UniversityMainzGermany

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