title: Color fluctuations in the nucleon in high-energy scattering.
abstract: We study quantum fluctuations of the nucleon's parton densities by combining QCD factorization for hard processes with the notion of cross section fluctuations in soft diffraction. The fluctuations of the small-x gluon density are related to the ratio of inelastic and elastic vector meson production in ep scattering. A simple dynamical model explains the HERA data and predicts the x and Q2 dependence of the ratio. In pp/p[over ]p scattering, fluctuations enhance multiple hard processes (but cannot explain the Tevatron CDF data), and reduce gap survival in central exclusive diffraction.
authors.affiliation: School of Physics and Astronomy, Tel Aviv University, 69978 Tel Aviv, Israel.
authors.forename: L
authors.initials: L
authors.lastname: Frankfurt
authors.forename: M
authors.initials: M
authors.lastname: Strikman
authors.forename: D
authors.initials: D
authors.lastname: Treleani
authors.forename: C
authors.initials: C
authors.lastname: Weiss