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FIZIKA B 17 (2008) 1, 151 - 158
 
DISPERSION RELATIONS AND QCD FACTORIZATION IN HARD REACTION
I. V. ANIKIN
Bogoliubov Laboratory of Theoretical Physics, JINR, 141980 Dubna, Russia
Email-address: anikin@theor.jinr.ru
Received 23 October 2007; Accepted 20
February 2008
Online 18 June 2008
We study analytical properties of the hard exclusive process amplitudes. We
found that QCD factorization for deeply virtual Compton scattering and hard
exclusive vector meson production results in the subtracted dispersion relation
with the subtraction constant determined by the Polyakov-Weiss D-term.
PACS numbers: 11.10.Hi
UDC 539.126
Keywords: hard reactions, QCD factorization, dispersion relations
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