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The spectral function of the omega meson in nuclear matter from a coupled-channel resonance model | | P. Muehlich
; V. Shklyar
; S. Leupold
; U. Mosel
; M. Post
; | | Date: |
27 Jul 2006 | | Abstract: | We calculate the spectral function of the omega meson in nuclear matter at zero temperature by means of the low-density theorem. The omega N forward scattering amplitude is calculated within a unitary coupled-channel effective Lagrangian model that has been applied successfully to the combined analysis of pion- and photon-induced reactions. While the peak of the omega spectral distribution is shifted only slightly, we find a considerable broadening of the omega meson due to resonance-hole excitations. For omega mesons at rest with respect to the surrounding nuclear medium, we find an additional width of about 60 MeV at saturation density. | | Source: | arXiv, nucl-th/0607061 | | Services: | Forum | Review | PDF | Favorites | |
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