Predictions for the forward cone in diffractive DIS

N. N. Nikolaev; A. V. Pronyaev; B. G. Zakharov

doi:10.1134/1.567920

paper

Predictions for the forward cone in diffractive DIS

arXiv:hep-ph/9809444 · doi:10.1134/1.567920

Abstract

We calculate the diffraction slope $B_{D}$ for diffractive DIS. We find a counterintuitive rise of $B_{D}$ from exclusive diffractive excitation of vector mesons to excitation of continuum states with $M^{2} \sim Q^{2}$ . For the small-mass continuum we predict a rapid variation of $B_{D}$ with $M^{2}$ on the scale $m_{V}^{2}$ and a sharp drop of $B_{D}$ for a small-mass continuum above the vector meson excitation.

to be published in JETP LETT., 10 pages, 2 figures