Interactions of omega mesons in nuclear matter and with nuclei
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arXiv
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866913559356637184 |
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| author | Lenske, Horst |
| author_facet | Lenske, Horst |
| contents | In-medium interactions of omega-mesons in infinite nuclear matter and finite nuclei are investigated in a microscopic approach with nucleon-nucleon and nucleon-resonance particle-hole polarization modes. The nuclear polarization tensor formalism is used. Covariant mean-field self-energies are taken into account. Longitudinal and transversal self-energies are derived. The theoretical results are applied to finite nuclei in local density approximation. Applications to recent data on the in-medium width of omega mesons in 93-Nb are presented. The data are well described by self-energies containing S-wave and P-wave resonances. Low-energy parameters are determined. For the first time a spectrum of omega-nucleus bound states is obtained, albeit with reduced lifetimes. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2410_16895 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Interactions of omega mesons in nuclear matter and with nuclei Lenske, Horst Nuclear Theory High Energy Physics - Phenomenology J.2 In-medium interactions of omega-mesons in infinite nuclear matter and finite nuclei are investigated in a microscopic approach with nucleon-nucleon and nucleon-resonance particle-hole polarization modes. The nuclear polarization tensor formalism is used. Covariant mean-field self-energies are taken into account. Longitudinal and transversal self-energies are derived. The theoretical results are applied to finite nuclei in local density approximation. Applications to recent data on the in-medium width of omega mesons in 93-Nb are presented. The data are well described by self-energies containing S-wave and P-wave resonances. Low-energy parameters are determined. For the first time a spectrum of omega-nucleus bound states is obtained, albeit with reduced lifetimes. |
| title | Interactions of omega mesons in nuclear matter and with nuclei |
| topic | Nuclear Theory High Energy Physics - Phenomenology J.2 |
| url | https://arxiv.org/abs/2410.16895 |