Non-factorizable Contributions to the Large Rapidity Gap at HERA

Abstract

The large rapidity gap events from HERA are analyzed within a model containing a pomeron and an $f$-reggeon contribution. The choice for the pomeron contribution is based on the Donnachie-Landshoff model. The dependence of the "effective intercept" of the pomeron on the momentum fraction ${\hat{I}}^2$ and on its Bjorken variable $\hat{I}¾$ is calculated.

9 pages, Latex + 3 figures, postscript