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arXiv 1004.2965nucl-thhep-exhep-phnucl-ex
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夸克-介子耦合模型中的超核

Hypernuclei in the quark-meson coupling model

K. Tsushima, P. A. M. Guichon

摘要:

本文给出了在最新的夸克-介子耦合模型中计算的超核结果,其中自洽地考虑了介质中平均标量场对单胶子交换超精细相互作用的影响。与介质中这种增加的超精细相互作用相关的额外排斥完全改变了对超精细超核的预测。在早期版本的QMC中,它们被束缚的数量与Λ超核相似,而在最新版本的QMC中,它们是未被束缚的,这与实验上不存在这种态的定性一致。

英文摘要:

We present results of hypernuclei calculated in the latest quark-meson coupling (QMC) model, where the effect of the mean scalar field in-medium on the one-gluon exchange hyperfine interaction, is also included self-consistently. The extra repulsion associated with this increased hyperfine interaction in-medium completely changes the predictions for Σ hypernuclei. Whereas in the earlier version of QMC they were bound by an amount similar to Λ hypernuclei, they are unbound in the latest version of QMC, in qualitative agreement with the experimental absence of such states.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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