Lorentz invariance relations for twist-3 quark distributions

We calculate twist-3 parton ditribution functions (PDFs) using cut and uncut diagrams. Uncut diagrams lead to a Dirac delta function term. No such term appears when cut diagrams are used. We show that a $\delta(x)$ is necessary to satisfy the Lorentz invariance relations of twist-3 PDFs, except for...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	Aslan, Fatma P, Burkardt, Matthias
Format:	Artikel
Sprache:	eng
Schlagworte:	Physics - High Energy Physics - Phenomenology Physics - High Energy Physics - Theory
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!