标题： 电磁强子质量差异及从夸克模型估计QCD真空同位旋对称性破坏参数 显示英文标题

标题： Electromagnetic Hadron Mass Differences and Estimation of Isotopic Symmetry Violation Parameters of QCD Vacuum from Quark Model

摘要： The estimations of the light quark mass differences, $m_d-m_u$, and the light quark condensate differences, $<\bar DD> - <\bar UU>$, are obtained in the framework of the \qm with QCD vacuum induced \q \ia . 我们考虑长波凝聚态和短波 \s 对电磁 \hn 质量 \di 的贡献，并表明后者显著提高了重子八重态的结果。 结果是： $m_d-m_u \approx 3.5\ MeV$ 和 $<\bar DD> - <\bar UU> \approx -(0\sim 3)\cdot10^{-3}<\bar UU>$。 显示英文摘要

摘要： The estimations of the light quark mass differences, $m_d-m_u$, and the light quark condensate differences, $<\bar DD> - <\bar UU>$, are obtained in the framework of the \qm\ with QCD vacuum induced \q\ \ia . We consider long - wave condensate and short - wave \s\ contributions to the electromagnetic \hn\ mass \di s and show that the latter significantly improve the results on baryon octet. The results are: $m_d-m_u \approx 3.5\ MeV$ and $<\bar DD> - <\bar UU> \approx -(0\sim 3)\cdot10^{-3}<\bar UU>$.