标题： 核中的同位旋对称性破缺 - ONS异常 显示英文标题

标题： Isospin Symmetry Breaking in Nuclei - ONS Anomaly

摘要： 我们利用夸克-介子耦合模型研究镜像核价质子和价中子的结合能差异，这些镜像核包括 $^{15}$O - $^{15}$N、$^{17}$F - $^{17}$O、$^{39}$Ca - $^{39}$K 和 $^{41}$Sc - $^{41}$Ca。 这一计算明确涉及核结构和壳效应。 结果表明，即使减去所有电磁修正后，强相互作用仍会导致几百keV的结合能差异。 这些差异的起源可以归因于u夸克和d夸克当前夸克质量差引入的强相互作用中的电荷对称性破缺效应。 在本报告中，我们首先回顾了夸克-介子耦合模型。 特别是，我们讨论了核介质中的核子质量。 然后，我们介绍了有限核中电荷对称性破缺的细节，特别是冈本-诺伦-施费尔异常。 显示英文摘要

摘要： We study the binding energy differences of the valence proton and neutron of the mirror nuclei, $^{15}$O - $^{15}$N, $^{17}$F - $^{17}$O, $^{39}$Ca - $^{39}$K and $^{41}$Sc - $^{41}$Ca, using the quark-meson coupling model. The calculation involves nuclear structure and shell effects explicitly. It is shown that binding energy differences of a few hundred keV arise from the strong interaction, even after subtracting all electromagnetic corrections. The origin of these differences may be ascribed to the charge symmetry breaking effects set in the strong interaction through the u and d current quark mass difference. In this report, we first review the quark-meson coupling model. In particular, we discuss about the nucleon mass in nuclear medium. Then, we present details of the charge symmetry breaking in finite nuclei, especially the Okamoto-Nolen-Schiffer anomaly.