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https://hdl.handle.net/2440/57778
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Type: | Journal article |
Title: | Binding of hypernuclei in the latest quark-meson coupling model |
Author: | Guichon, P. Thomas, A. Tsushima, K. |
Citation: | Nuclear Physics A, 2008; 814(1-4):66-73 |
Publisher: | Elsevier Science BV |
Issue Date: | 2008 |
ISSN: | 0375-9474 1873-1554 |
Statement of Responsibility: | Pierre A. M. Guichon, Anthony W. Thomas and Kazuo Tsushima |
Abstract: | The most recent development of the quark-meson coupling (QMC) model, in which the effect of the mean scalar field in-medium on the hyperfine interaction is also included self-consistently, is used to compute the properties of finite hypernuclei. The calculations for $\Lambda$ and $\Xi$ hypernuclei are of comparable quality to earlier QMC results without the additional parameter needed there. Even more significantly, the additional repulsion associated with the increased hyperfine interaction in-medium completely changes the predictions for $\Sigma$ hypernuclei. Whereas in the earlier work they were bound by an amount similar to $\Lambda$ hypernuclei, here they are unbound, in qualitative agreement with the experimental absence of such states. The equivalent non-relativistic potential felt by the $\Sigma$ is repulsive inside the nuclear interior and weakly attractive in the nuclear surface, as suggested by the analysis of $\Sigma$-atoms. |
Description: | Submitted to Cornell University’s online archive www.arXiv.org in 2007 by Guichon. Post-print sourced from www.arxiv.org. |
DOI: | 10.1016/j.nuclphysa.2008.10.001 |
Published version: | http://arxiv.org/abs/0712.1925 |
Appears in Collections: | Aurora harvest 5 Chemistry and Physics publications |
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