Higher twists and the measurements of g2
Mar 15, 20054 pages
Part of Proceedings, 2nd International Workshop on Structure of the Nucleon at Large Bjorken x (HiX2004) : Marseille, France, July 26-28, 2004, 122-125
Published in:
- AIP Conf.Proc. 747 (2005) 1, 122-125
Contribution to:
- , 122-125
- HiX2004
- Published: Mar 15, 2005
DOI:
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Abstract: (AIP)
The 6 GeV accelerator at Jefferson Lab was used to perform precision studies of the neutron spin structure functions, g 1 n (x, Q 2 ) and g 2 n (x, Q 2 ) . Using a dense polarized 3He target allowed us to determine the lowest moment, Γ 1 n (Q 2 ) , for three different momentum‐transfers (< 1 GeV2) in the resonance region. Together with data from other laboratories we were able to perform a systematic analysis of higher twist effects. In addition, a first precision measurement of g 2 n outside the resonance region (W> 1.9 GeV) indicates clear evidence for higher twist contributions for Q 2 values less than 1 GeV2.- 12.38.-t
- 14.20.Dh
- neutrons
- baryon spin
- quantum chromodynamics
- nuclei with mass number 1 to 5
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