Electromagnetic production of vector mesons at low energies

Details Electromagnetic production of vector mesons at low energies Electromagnetic production of vector mesons at low energies

2000-04-25

arxiv.org/abs/nucl-th/0004055v1

Physics

Nuclear Physics

Nuclear Theory

9 pages, LaTeX with sprocl.sty, 5 figures (11 eps files), Talk presented at the NSTAR2000 Workshop, The Physics of Excited Nuc

Scientific paper

We have investigated exclusive photoproduction of light vector mesons ($\omega$, $\rho$ and $\phi$) on the nucleon at low energies. In order to explore the questions concerning the so-called missing nucleon resonances, we first establish the predictions from a model based on the Pomeron and meson exchange mechanisms. We have also explored the contributions due to the mechanisms involving $s$- and $u$-channel intermediate nucleon state. Some discrepancies found at the energies near threshold and large scattering angles suggest a possibility of using this reaction to identify the nucleon resonances.

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