Exclusive diffractive processes at HERA within the dipole picture

2006/06/30 by H. Kowalski, Leszek Motyka, L. Motyka +1 · 14 citations
Physics and Astronomy · #Color-glass condensate #Diffraction #Dipole #Distribution function #Gluon #HERA #High-Energy Particle Collisions Research #Meson #Nuclear physics #Optics #Particle physics #Particle physics theoretical and experimental studies #Physics #Proton #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #Saturation (graph theory) #Scattering #Transverse plane #Vector meson #hep-ph

paper · pdf · doi:10.1103/physrevd.74.074016

published as Phys.Rev.D74:074016,2006 · 48 pages, 28 figures, the final version to appear in Physical Review D

arxiv created 2006/09/29 · openalex publication_date 2006/10/23 · arxiv updated 2014/11/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We present a simultaneous analysis, within an impact parameter dependent saturated dipole model, of exclusive diffractive vector meson (J/\ensuremathψ, \ensuremathφ, and \ensuremathρ) production, deeply virtual Compton scattering and the total \ensuremathγ^*p cross section data measured at HERA. Various cross sections measured as a function of the kinematic variables Q², W and t are well described, with little sensitivity to the details of the vector meson wave functions. We determine the properties of the gluon density in the proton in both longitudinal and transverse dimensions, including the impact parameter dependent saturation scale. The overall success of the description indicates universality of the emerging gluon distribution and proton shape.

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• Wilson line correlator in the MV model: relating the glasma to deep inelastic scattering
• The small-x gluon distribution in centrality biased pA and pp collisions
• Exclusive ρ0 production in deep inelastic scattering at HERA
• Extracting the Distribution Amplitudes of the ρ meson from the Color Glass Condensate
• Investigating saturation effects in ultraperipheral collisions at the LHC with the color dipole model
• Diffractive hadron production in deep inelastic scattering off heavy nuclei and gluon saturation
• Azimuthal Collimation of Long Range Rapidity Correlations by Strong Color Fields in High Multiplicity Hadron-Hadron Collisions
• Decoupling of the leading contribution in the discrete BFKL analysis of high-precision HERA data
• Color dipole predictions for the exclusive vector meson photoproduction in pp, pPb, and PbPb collisions at run 2 LHC energies
• Exclusive vector meson production in electron – ion collisions at the EIC, LHeC and FCC–eh