Title Duality between different mechanisms of QCD factorization in $\gamma^{*}\gamma$ collisionsDuality between different mechanisms of QCD factorization in $\gamma^{*}\gamma$ collisions Author Anikin, I.V. Cherednikov, I.O. Stefanis, N.G. Teryaev, O.V. Faculty/Department Faculty of Sciences. Physics Publication type article Publication 2009Berlin, 2009 Subject Physics Source (journal) European physical journal : C : particles and fields. - Berlin Volume/pages 61(2009):3, p. 357-367 ISSN 1434-6044 ISI 000266385100001 Carrier E Target language English (eng) Full text (Publishers DOI) Abstract We study the phenomenon of duality in hard exclusive reactions to which QCD factorization applies. Considering "two-photon"-like processes in the scalar phi(3)(E) model and also two-hadron (pion) production from the collisions of a real (transversely polarized) and a highly-virtual, longitudinally polarized photon in QCD, we identify two regimes of factorization, each of them associated with a distinct non-perturbative mechanism. One mechanism involves twist-3 Generalized Distribution Amplitudes, whereas the other one employs leading-twist Transition Distribution Amplitudes. In the case of the scalar phi(3)(E) model, we find duality in that kinematical region where the two mechanisms overlap. In the QCD case, the appearance of duality is sensitive to the particular nonperturbative model applied and can, therefore, be used as an additional adjudicator. Full text (open access) https://repository.uantwerpen.be/docman/irua/969b42/8992.pdf E-info http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000266385100001&DestLinkType=RelatedRecords&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000266385100001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000266385100001&DestLinkType=CitingArticles&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848