Coherent Nuclear Diffractive Production of Minijets - Illuminating Color Transparency

Abstract

The cross section for coherent nuclear processes in which an incident meson or photon dissociates diffractively into two jets of high relative transverse momentum (between about 1 and 3 GeV/c) is found to be proportional in QCD to $A^2$ in a wide kinematical region. The leading correction to this is a significant positive term $\propto A^{7/3}$ caused by nuclear multiple-scattering. We find also that shadowing of hard diffractive processes reappears as a leading twist effect in the TeV energy range.

Comments: Report number DOE/ER/40427-01-N93 14 pages, 4 figures available from author Miller or see the slightly shorter version published as Phys. Lett. B304, 1 (1993)