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Singularities in Twist-3 Quark Distributions by Aslan, Fatma; Burkardt, Matthias is a scholarly article available to read on EtoBox.

What is Singularities in Twist-3 Quark Distributions about?

We find in one-loop calculations and spectator models that twist-3 GPDs exhibit discontinuities. In the forward limit these discontinuities grow into Dirac delta functions which are essential to satisfy the sum rules involving twist-3 PDFs. We calculate twist-3 quasi-PDFs as a function of longitudinal momentum and identify the Dirac delta function terms with momentum components in the nucleon state that do not scale as the nucleon is boosted to the infinite momentum frame.

Author

Aslan, Fatma; Burkardt, Matthias

Published

2018

Language

EN