GPDs and underlying spin structure of the nucleon
Abstract
Description
It is shown that, based only upon two empirically known facts besides two reasonable theoretical postulates, we are inevitably led to a model-independent conclusion that the quark orbital angular momentum carries nearly half of the total nucleon spin at the low energy scale of nonperturbative QCD. Also shown are explicit model predictions for the forward limit of the unpolarized spin-flip GPDs, which are believed to give valuable information on the distributions of quark angular momentum inside the nucleon.
Invited talk at "Advanced Studies Institute on Symmetries and Spin", July 27-August 3, 2005, Prague, Czech Pepublic
Invited talk at "Advanced Studies Institute on Symmetries and Spin", July 27-August 3, 2005, Prague, Czech Pepublic