Comment on soft-pion emission in DVCS

Abstract

The soft-pion theorem for pion production in deeply virtual Compton scattering, derived by Guichon, Mosse and Vanderhaegen, is shown to be consistent with chiral perturbation theory. Chiral symmetry requires that the nonsinglet operators corresponding to spin-independent and spin-dependent parton distributions have the same anomalous dimensions in cases where those operators are related by chiral transformations. In chiral perturbation theory, their scale-dependences can thus be absorbed in the coefficents of the corresponding effective operators, without affecting their chiral structures.

2 pages, RevTeX

References in corpus (2)

• Pion production in deeply virtual Compton scattering
• Soft Pion Emission in DVCS

Cited by in corpus (5)

• Leading Chiral Corrections to the Nucleon Generalized Parton Distributions
• Model Independent Results for SU(3) Violation in Light-Cone Distribution Functions
• Model-Independent Results for SU(3) Violation in Twist-3 Light-Cone Distribution Functions
• Exploring Baryon Resonances with Transition Generalized Parton Distributions: Status and Perspectives
• Soft Pion Emission in Hard Exclusive Pion Production