On the interplay between Q^2 and t dependence in exclusive diffractive production of real photons and vector mesons in ep collisions

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Title:	On the interplay between Q^2 and t dependence in exclusive diffractive production of real photons and vector mesons in ep collisions
Author:	Fiore, Roberto; Jenkovszky, Lázsló L.; Lavorini, A.; Magas, Volodymyr
Other authors:	Universitat de Barcelona
Abstract:	We show how the familiar phenomenological way of combining the Q2 (photon virtuality) and t (squared momentum transfer) dependences of the scattering amplitude in Deeply Virtual Compton Scattering (DVCS) [1, 2] and Vector Meson Production (VMP) [2] processes can be understood in an off-mass-shell generalization of dual amplitudes with Mandelstam analyticity [3]. By comparing different approaches, we managed also to constrain the numerical values of the free parameters.
Subject(s):	-Física nuclear -Partícules (Física nuclear) -Fotons -Col·lisions (Física nuclear) -Nuclear physics -Particles (Nuclear physics) -Photons -Collisions (Nuclear physics)
Rights:	(c) Fiore, Roberto et al., 2012
Document type:	Article Article - Published version
Published by:	Bogolyubov Institute for Theoretical Physics, National Academy of Science of Ukraine
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