Publication
Title
Duality and factorization theorem in QCD
Author
Abstract
We find that in "two-photon"-like processes in the scalar φ3E model and also in hadron-pair production arising from the collisions of a real (transversely polarized) and a highly virtual, longitudinally polarized, photon in QCD, there is duality between two distinct nonperturbative mechanisms. These two mechanisms, one involving a twist-3 Generalized Distribution Amplitude, the other employing a leading-twist Transition Distribution Amplitude, are associated with different regimes of factorization. In the kinematical region, where the two mechanisms overlap, duality is observed for the scalar φ3E model, while in the QCD case the appearance of duality turns out to be sensitive to the particular nonperturbative model applied and can, therefore, be used as a tool for selecting the most appropriate one.
Language
English
Source (journal)
arXiv
Publication
2008
Volume/pages
(2008), p. 1-7
Medium
E-only publicatie
Full text (publisher's version - intranet only)
UAntwerpen
Faculty/Department
Publication type
Subject
External links
Record
Identification
Creation 09.01.2015
Last edited 14.03.2016