Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2001-11-29
Nucl.Phys.Proc.Suppl. 108 (2002) 318-320
Physics
High Energy Physics
High Energy Physics - Phenomenology
3 pages, Latex; Contribution to Int. LC-Workshop Trento 2001
Scientific paper
10.1016/S0920-5632(02)01353-1
The decomposition of nonlocal operators (and of their matrix elements) into an (infinite) series w.r.t. geometric twist is used to introduce (new) parton distributions, generalized parton distributions and hadron wave functions of definite twist. Their comparision with the conventional distributions (of definite dynamical twist) leads to Wandzura-Wilczek like relations, Burkhardt-Cottingham like sum rules and allows for power corrections of the various distribution amplitudes. Some general aspects are reviewed.
Geyer Bodo
Lazar Markus
Robaschik Dieter
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