Measurement of the Q2-evolution of the Bjorken integral at low Q2

Details Measurement of the Q2-evolution of the Bjorken integral at low Q2 Measurement of the Q2-evolution of the Bjorken integral at low Q2

2004-11-30

arxiv.org/abs/nucl-ex/0411056v1

Physics

Nuclear Physics

Nuclear Experiment

Contribution to the proceedings of the 16th International Spin Physics Symposium, spin2004 (Trieste)

Scientific paper

We report on the extraction of the Q2-dependence of the Bjorken sum between
0.16 < Q2 < 1.1 GeV2. A twist analysis performed on these data shows that the
higher twist corrections are small due to a cancellation between the twist-4
and 6 terms. The extraction of an effective strong coupling constant is
discussed.

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