dorsal/arxiv
View SchemaK$^-$-proton scattering and the $\Lambda (1405)$ in dense matter
| Authors | Volker Koch |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9406030 |
| URL | https://arxiv.org/abs/nucl-th/9406030 |
| DOI | 10.1016/0370-2693(94)91434-6 |
| Journal | Phys.Lett. B337 (1994) 7-13 |
Abstract
The scattering of antikaons with nucleons is studied in the nuclear environment. Describing the $\lam$ as a $K^-$ proton bound state, we find, that due to the Pauli blocking of intermediate states, the mass of the $\Lambda (1405)$ is shifted upwards in energy, above the $K^-$ proton threshold and and its width is somewhat broadened. As a consequence the s-wave $K^-$--nucleon scattering length turns attractive at finite nucleon density ($\rho \geq 0.25 \rho_0$) leading to a mean field potential for the $K^-$ of about $\sim -100 \, \rm MeV$ in nuclear matter at ground state density. Consequences for Heavy Ion collisions and possible experimental checks for the structure of the $\lam$ are discussed. (Figures will be sent on request)
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"abstract": "The scattering of antikaons with nucleons is studied in the nuclear\nenvironment. Describing the $\\lam$ as a $K^-$ proton bound state, we find, that\ndue to the Pauli blocking of intermediate states, the mass of the $\\Lambda\n(1405)$ is shifted upwards in energy, above the $K^-$ proton threshold and and\nits width is somewhat broadened. As a consequence the s-wave $K^-$--nucleon\nscattering length turns attractive at finite nucleon density ($\\rho \\geq 0.25\n\\rho_0$) leading to a mean field potential for the $K^-$ of about $\\sim -100 \\,\n\\rm MeV$ in nuclear matter at ground state density. Consequences for Heavy Ion\ncollisions and possible experimental checks for the structure of the $\\lam$ are\ndiscussed. (Figures will be sent on request)",
"arxiv_id": "nucl-th/9406030",
"authors": [
"Volker Koch"
],
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"doi": "10.1016/0370-2693(94)91434-6",
"journal_ref": "Phys.Lett. B337 (1994) 7-13",
"title": "K$^-$-proton scattering and the $\\Lambda (1405)$ in dense matter",
"url": "https://arxiv.org/abs/nucl-th/9406030"
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