Hard diffractive electroproduction of vector mesons in QCD

Leonid Frankfurt, Werner Koepf, Mark Strikman

Research output: Contribution to journalArticlepeer-review

233 Scopus citations

Abstract

Hard diffractive electroproduction of longitudinally polarized vector mesons is calculated within the leading [Formula presented] approximation of QCD using the leading order parton densities within the nucleon. Novel QCD features of the production of excited states and of the restoration of flavor symmetry are analyzed. At the onset of the asymptotic regime, our analysis finds an important role of quark Fermi motion within the diffractively produced vector mesons, and we suggest to use this effect to measure the high momentum tail of the wave function of the vector mesons. We deduce a kinematical boundary for the region of applicability of the decomposition of the hard amplitudes over powers of [Formula presented] and/or a limit on the increase of the cross sections of hard processes at small [Formula presented], and briefly analyze its consequences. We also estimate the nuclear attenuation of the diffractive electroproduction of vector mesons and compare with estimates of the shadowing of the longitudinal structure function.

Original languageEnglish (US)
Pages (from-to)3194-3215
Number of pages22
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume54
Issue number5
DOIs
StatePublished - 1996

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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