Eur. Phys. J. A 10, 355-364

Deuteron photodisintegration within the Quark-Gluon Strings Model and QCD motivated nonlinear Regge trajectories

V.Yu. Grishina¹, L.A. Kondratyuk², W. Cassing³, A.B. Kaidalov², E. De Sanctis⁴ and P. Rossi<sup>4

1</sup>  Institute for Nuclear Research, 60th October Anniversary Prospect 7A, 117312 Moscow, Russia
²  Institute for Theoretical and Experimental Physics, B. Cheremushkinskaya 25, 117259 Moscow, Russia
³  Institute for Theoretical Physics, University of Giessen, Heinrich-Buff-Ring 16, D-35392 Giessen, Germany
⁴  Frascati National Laboratories, INFN, CP 13, via E. Fermi, 40; I-00044, Frascati, Italy

(Received: 12 March 2001 Communicated by V.V. Anisovich)

Abstract
We investigate deuteron two-body photodisintegration within the framework of the Quark-Gluon Strings Model with nonlinear baryon Regge trajectories. Special attention is paid to the use of QCD motivated Regge trajectories of the logarithmic and square-root form. We find that the recent experimental data from TJNAF in the few-GeV region can be reasonably described by the model. Angular distributions at different -energies are presented and the effect of a forward-backward asymmetry is discussed. Predictions for the energy dependence of at higher energies and different are presented, too.

PACS
12.40.Nn - Regge theory, duality, absorptive/optical models.
12.40.Vv - Vector-meson dominance.
13.40.-f - Electromagnetic processes and properties.
25.20.-x - Photonuclear reactions.

© Società Italiana di Fisica, Springer-Verlag 2001