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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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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.

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Bogolyubov Institute for Theoretical Physics, National Academy of Science of Ukraine

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Articles publicats en revistes (Física Quàntica i Astrofísica)

# metadata.dc.title[].value
On the interplay between Q^2 and t dependence in exclusive diffractive production of real photons and vector mesons in ep collisions