Photoproduction of vector mesons off nucleons near threshold

Details Photoproduction of vector mesons off nucleons near threshold Photoproduction of vector mesons off nucleons near threshold

1996-01-18

arxiv.org/abs/nucl-th/9601028v1

Nucl.Phys.A600:477-490,1996

Physics

Nuclear Physics

Nuclear Theory

14 pages, 11 Postscript figures, uses elsart.sty, epsfig.sty, to appear in Nucl. Phys. A

Scientific paper

10.1016/0375-9474(96)00011-5

We propose a simple meson-exchange model of the photoproduction of $\rho$- and $\omega$-mesons off protons near threshold ($E_\gamma$ less than 2 GeV). This model provides a good description of the available data and implies a large $\rho$-nucleon interaction in the scalar channel ($\sigma$-exchange). We use this phenomenological interaction to estimate the leading contribution to the self-energy of $\rho$-mesons in matter. The implications of our calculation for experimental studies of the $\rho$-meson mass in nuclei are discussed.

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