arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2001.08621nucl-th
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从$\bar{K}N$相互作用到$\bar{K}$ -核准束缚态

From $\bar{K}N$ Interactions to $\bar{K}$-Nuclear Quasi-Bound States

Aleš Cieplý, Jaroslava Hrtánková, Jiří Mareš, Eliahu Friedman, Avraham Gal, Àngels Ramos

摘要:

本文综述了$K^-$ -核相互作用和$K^-$ -核准束缚态的研究现状。所采用的$K^-$ -核光学势由两部分组成--单核子势和唯象多核子势,单核子势是由手征激发的$\bar{K}N$振幅在微观上构造的,多核子势是受K介子原子数据约束的.在计算多体系统中的$K^{-}$准束缚态时,考虑了多核子吸收,导致了极大的宽度,大大超过了束缚能。如果这一特征得到证实,则不太可能观察到这种状态。最后,一个新的介质中$K^-NN$吸收的微观模型的发展进行了讨论。

英文摘要:

We review the current status of our study of $K^-$-nuclear interactions and $K^-$-nuclear quasi-bound states. The adopted $K^-$-nuclear optical potential consists of two parts -- the single-nucleon one constructed microscopically from chirally motivated $\bar{K}N$ amplitudes, and a phenomenological multi-nucleon one constrained in fits to kaonic atoms data. The inclusion of multi-nucleon absorption in our calculations of $K^{-}$ quasi-bound states in many-body systems leads to huge widths, considerably exceeding the binding energies. If this feature is confirmed the observation of such states is unlikely. Finally, a development of a new microscopical model for in-medium $K^-NN$ absorption is discussed as well.

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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