Photoproduction of vector mesons off nucleons near threshold

We propose a simple meson-exchange model of the photoproduction of ϱ- and ω-mesons off protons near threshold ( E γ ≲ 2 GeV). This model provides a good description of the available data and implies a large ϱ-nucleon interaction in the scalar channel (σ-exchange). We use this phenomenological intera...

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Bibliographic Details
Published inNuclear physics. A Vol. 600; no. 4; pp. 477 - 490
Main Authors Friman, Bengt, Soyeur, Madeleine
Format Journal Article
LanguageEnglish
Published Elsevier B.V 22.04.1996
Subjects
Photoproduction
Vector mesons
13.60.L
Vector mesons
Photoproduction
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Summary:We propose a simple meson-exchange model of the photoproduction of ϱ- and ω-mesons off protons near threshold ( E γ ≲ 2 GeV). This model provides a good description of the available data and implies a large ϱ-nucleon interaction in the scalar channel (σ-exchange). We use this phenomenological interaction to estimate the leading contribution to the self-energy of ϱ-mesons in matter. The implications of our calculation for experimental studies of the ϱ-meson mass in nuclei are discussed.
ISSN:0375-9474
DOI:10.1016/0375-9474(96)00011-5