Exclusive J/Psi photo- and electroproduction in a dual model

Abstract

Exclusive J/Ψphoto- and electroproduction is studied in the framework of the analytic S-matrix theory. The differential and integrated elastic cross sections are calculated using the Modified Dual Amplitude with Mandelstam Analyticity (M-DAMA) model. The model is applied to the description of the available experimantal data and proves to be valid in a wide region of the kinematical variables s, t, and Q^2. Our amplitude can be used also as a universal background parametrization for the extraction of tiny resonance signals.

Talk presented at XVIII International Workshop on Deep-Inelastic Scattering and Related Subjects, DIS 2010 April 19-23, 2010 Firenze, Italy