The compatibility of diffractive hard scattering in p(p)over-bar and ep collisions

We show that the data for diffractive dijet production at the Tevatron p (p ) over bar collider are consistent with diffractive deep inelastic ep data collected at HERA. The breakdown of factorization between the two data sets is naturally explained by a strong tendency to populate the rapidity gap i n the p (p) over bar diffractive process by secondaries from soft underlyin g interactions and by bremsstrahlung associated with the presence of the ha rd dijet subprocess. (C) 2001 Published by Elsevier Science B.V.