Nuclear exclusive vector meson photoproduction
نویسندگان
چکیده
منابع مشابه
Regge pole model for all vector meson exclusive photoproduction by real and virtual photons
A model based on a dipole Pomeron framework for vector meson exclusive photoproduction by real and virtual photons shows very good agreement with the experimental data. The model does not violate unitarity constrains and describes in a universal manner all the available data for ρ, ω, ϕ, J/ψ and Υ vector meson photoproduction in the region of energies 1.7 ≤ W ≤ 250 GeV and photon virtualities 0...
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We have studied in perturbative QCD all independent helicity amplitudes describing the photoproduction of light vector mesons at large t. We found a new hard production mechanism which is related to the possibility for a real photon to fluctuate into a massless q ¯ q pair in a chiral-odd spin configuration. Each helicity amplitude is given as a sum of a usual chiral-even contribution (when the ...
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Xavier Artru,1, ∗ Jean-Marc Richard,2, † and Jacques Soffer3, ‡ Institut de Physique Nucléaire de Lyon, CNRS-IN2P3–Université Lyon-I 4, rue Enrico Fermi, 69622 Villeurbanne cedex, France Laboratoire de Physique Subatomique et Cosmologie Grenoble Universités–CNRS-IN2P3-Ingénierie 53, avenue des Martyrs, F–38026 Grenoble Cedex, France Centre de Physique Théorique CNRS, Luminy Case 907, F-13288 Ma...
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ژورنال
عنوان ژورنال: The European Physical Journal C
سال: 2004
ISSN: 1434-6044,1434-6052
DOI: 10.1140/epjc/s2004-02044-7