dorsal/arxiv
View SchemaMedium effects in the production and decay of $\omega$- and $\rho$-resonances in pion-nucleus interactions
| Authors | W. Cassing, Ye. S. Golubeva, A. S. Iljinov, L. A. Kondratyuk |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9612026 |
| URL | https://arxiv.org/abs/nucl-th/9612026 |
| DOI | 10.1016/S0370-2693(97)00137-8 |
| Journal | Phys.Lett. B396 (1997) 26-32 |
Abstract
The $\omega$- and $\rho$-resonance production and their dileptonic decay in $\pi^- A$ reactions at GSI energies are calculated within the intranuclear cascade (INC) approach. The invariant mass distribution of the dilepton pair for each resonance is found to have two components which correspond to the decay of the resonances outside and inside the target nucleus. The latter components are strongly distorted by the nuclear medium due to resonance-nucleon scattering and a possible mass shift at finite baryon density. These medium modifications are compared to background sources in the dilepton spectrum from $\pi N$ bremsstrahlung and the Dalitz decays of $\Delta$'s and $\eta$ mesons produced in the reaction.
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"abstract": "The $\\omega$- and $\\rho$-resonance production and their dileptonic decay in\n$\\pi^- A$ reactions at GSI energies are calculated within the intranuclear\ncascade (INC) approach. The invariant mass distribution of the dilepton pair\nfor each resonance is found to have two components which correspond to the\ndecay of the resonances outside and inside the target nucleus. The latter\ncomponents are strongly distorted by the nuclear medium due to\nresonance-nucleon scattering and a possible mass shift at finite baryon\ndensity. These medium modifications are compared to background sources in the\ndilepton spectrum from $\\pi N$ bremsstrahlung and the Dalitz decays of\n$\\Delta$\u0027s and $\\eta$ mesons produced in the reaction.",
"arxiv_id": "nucl-th/9612026",
"authors": [
"W. Cassing",
"Ye. S. Golubeva",
"A. S. Iljinov",
"L. A. Kondratyuk"
],
"categories": [
"nucl-th"
],
"doi": "10.1016/S0370-2693(97)00137-8",
"journal_ref": "Phys.Lett. B396 (1997) 26-32",
"title": "Medium effects in the production and decay of $\\omega$- and $\\rho$-resonances in pion-nucleus interactions",
"url": "https://arxiv.org/abs/nucl-th/9612026"
},
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