arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2012.12236nucl-th
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双π原子的结构

Structure of double pionic atoms

Akari Tani, Natsumi Ikeno, Daisuke Jido, Hideko Nagahiro, Hiroyuki Fujioka, Kenta Itahashi, Satoru Hirenzaki

摘要:

从理论上研究了双π原子的结构,其中两个带负电荷的π原子($π^-$)束缚在原子轨道上。从多玻色子系统的观点来看,双π原子是一个有趣的系统。此外,还可能推导出有关同位旋$I = 2$、$ππ$相互作用和π-核强相互作用的有价值的信息。本文考虑了重核中的$ππ$强相互作用和电磁相互作用,用微扰理论计算了重核中双π原子的结合能.我们研究了几种组合的两个介子状态,并发现,由于$ππ$相互作用的能量移动的数量级为10 keV左右的强相互作用和基态的电磁相互作用约100 keV。

英文摘要:

We study theoretically the structure of double pionic atoms, in which two negatively charged pions ($π^-$) are bound in the atomic orbits. The double pionic atom is considered to be an interesting system from the point of view of the multi bosonic systems. In addition, it could be possible to deduce valuable information on the isospin $I = 2$ $ππ$ interaction and the pion-nucleus strong interaction. In this paper, we take into account the $ππ$ strong and electromagnetic interactions, and evaluate the effects on the binding energies by perturbation theory for the double pionic atoms in heavy nuclei. We investigate several combinations of two pionic states and find that the order of magnitude of the energy shifts due to the $ππ$ interaction is around 10 keV for the strong interaction and around 100 keV for the electromagnetic interaction for the ground 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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