The 'proton spin' effect: Theoretical status '97

The theoretical status of the `proton spin' effect is reviewed. The conventional QCD parton model analysis of polarised DIS is compared with a complementary approach, the composite operator propagator-vertex (CPV) method, each of which provides its own insight into the origin of the observed suppression in the first moment of

g_1^p

. The current status of both experiment and non-perturbative calculations is summarised. The future role of semi-inclusive DIS experiments, in both the current and target fragmentation regions, is described.

Note:

Review talk at QCD97 Montpellier, July 1997. 12 pages, LaTeX, incl. 13 figures. Typo corrected in eq(36) Report-no: SWAT-97/160

talk: Montpellier 1997/07/03
p: spin
lepton nucleon: deep inelastic scattering
polarization
quantum chromodynamics
model: parton
sum rule
operator product expansion
Iizuka-Okubo-Zweig rule
structure function: spin

References(28)

Figures(0)

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