X iv : h ep - p h / 97 12 45 8 v 1 1 9 D ec 1 99 7 Review on the Status of Spin Structure Function Measurements
نویسنده
چکیده
Results are presented on inclusive measurements of the spin structure function g 1 (x). The world's data on spin–dependent deep inelastic scattering are summarized. Results from recent Next–to–Leading Order (NLO) QCD analyses are given. They provide another successful test of QCD. The uncertainties arising from the low–x extrapolation of the inclusive data in absence of any measurement prevent firm conclusions about the spin structure of the nucleon. The NLO QCD analyses suggest a sizable gluon contribution to the nucleon spin. Proposals to directly probe the gluon polarisation are described.
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