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Coherent $ω$ photoproduction from nuclei and $ω$ properties in nuclear matter

A. Sibirtsev·Ch. Elster·J. Speth
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Abstract

The coherent $ω$-meson photoproduction from nuclei is proposed as a phenomenological method to evaluate the momentum dependence of $ω$-meson mass shift and width in nuclear matter. We analyze available data on un-separated coherent and incoherent $ω$-meson photoproduction from nuclei and extract the imaginary part of the the complex forward $ω{N}$ scattering amplitude, which is proportional to the in-medium $ω$-meson width. The accuracy of the currently available data is not sufficient to evaluate the real part of forward $ω{N}$ scattering amplitude and reconstruct the momentum dependence of the mass shift of the $ω$-meson.

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A. Sibirtsev, Ch. Elster, J. Speth. 2002-03-18. Coherent $ω$ photoproduction from nuclei and $ω$ properties in nuclear matter. https://arxiv.org/abs/nucl-th/0203044

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