Friday, June 2, 2006, 1:30 pm — Small Seminar Room, Bldg. 510
We discuss the present status of the proton spin problem and its interface with chiral and axial U(1) dynamics. Present data suggest that gluon and strange sea polarization may be small. The possibility of a subtraction constant in the dispersion relation for the proton's g_1 spin structure function will be discussed. A subtraction at infinity, if finite, is non-perturbative and acts like a like a spin-polarized condensate inside a nucleon: it affects the first moment (and not the higher moments) of polarized parton distributions. We also discuss the Regge to perturbative QCD interface for polarized partons.
Hosted by: Anna Stasto
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