Color fluctuations in the nucleon in high-energy scattering

L. Frankfurt, M. Strikman, D. Treleani, C. Weiss

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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/p̄p scattering, fluctuations enhance multiple hard processes (but cannot explain the Tevatron CDF data), and reduce gap survival in central exclusive diffraction.

Original languageEnglish (US)
Article number202003
JournalPhysical Review Letters
Volume101
Issue number20
DOIs
Publication statusPublished - Nov 13 2008

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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