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

TL;DR

This paper models exclusive J/Psi photo- and electroproduction using the Modified Dual Amplitude with Mandelstam Analyticity within the analytic S-matrix framework, successfully describing experimental data across various kinematic ranges.

Contribution

It introduces the M-DAMA model for describing J/Psi production, providing a universal background parametrization applicable in a wide kinematic region.

Findings

Model accurately fits experimental data

Valid across wide s, t, Q^2 regions

Useful for resonance signal extraction

Abstract

Exclusive J/\Psi photo- 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.