Elastic electroproduction of ρ and J/ψ mesons at large Q2 at HERA

Academic Article

Abstract

  • The total cross sections for the elastic electroproduction of ρ and J/ψ mesons for Q2 > 8 GeV2 and (W) ≃ 90 GeV/c2 are measured at HERA with the H1 detector. The measurements are for an integrated electron - proton luminosity of ≃ 3 pb-1. The dependences of the total virtual photon - proton (γ*p) cross sections on Q2, W and the momentum transfer squared to the proton (f), and, for the ρ, the dependence on the polar decay angle (cosθ*), are presented. The J/ψ : ρ cross section ratio is determined. The results are discussed in the light of theoretical models and of the interplay of hard and soft physics processes.
  • Published In

  • Nuclear Physics B  Journal
  • Digital Object Identifier (doi)

    Author List

  • Aid S; Andreev V; Andrieu B; Appuhn RD; Arpagaus M; Babaev A; Bähr J; Bán J; Ban Y; Baranov P
  • Start Page

  • 3
  • End Page

  • 33
  • Volume

  • 468
  • Issue

  • 1-2