标题： 同位旋对称性破缺在HLS模型中的研究：一个完整的($ρ, ω, φ$)混合方案 显示英文标题

标题： Isospin Symmetry Breaking within the HLS Model: A Full ($ρ, ω, φ$) Mixing Scheme

摘要： 我们研究在隐藏局部对称性（HLS）模型中如何生成同位旋对称性破缺。 我们表明，赝标介子上的同位旋对称性破缺效应通过K介子环自然地在矢量介子的物理中引起相应的效应。 这样，可以恢复传统上从$\rho-\omg$混合中预期的所有特征，并且发现支持奥尔赛相位模型对$e^+e^- \ra \pi^+ \pi^-$幅度的支持。 然后，我们检查一种有效的程序，该程序在HLS模型的整个$\rho$、$\omg$、$\phi$区域内生成混合。 相应的模型使我们能够以模和相位描述HLS模型可访问的所有轻介子两体衰变，仅排除$\rho \ra \pi \pi$和$K^* \ra K \pi$模式，这些模式引发了一个特定问题。 与实验数据进行比较，涵盖了模和相位信息；这表示在考虑了SU(3)破缺、伪标量区间的九重态对称性破缺以及现在同位旋对称性破缺的约束模型中，成功地描述了26个物理量，拟合质量非常好。 显示英文摘要

摘要： We study the way isospin symmetry violation can be generated within the Hidden Local Symmetry (HLS) Model. We show that isospin symmetry breaking effects on pseudoscalar mesons naturally induces correspondingly effects within the physics of vector mesons, through kaon loops. In this way, one recovers all features traditionally expected from $\rho-\omg$ mixing and one finds support for the Orsay phase modelling of the $e^+e^- \ra \pi^+ \pi^-$ amplitude. We then examine an effective procedure which generates mixing in the whole $\rho$, $\omg$, $\phi$ sector of the HLS Model. The corresponding model allows us to account for all two body decays of light mesons accessible to the HLS model in modulus and phase, leaving aside the $\rho \ra \pi \pi$ and $K^* \ra K \pi$ modes only, which raise a specific problem. Comparison with experimental data is performed and covers modulus and phase information; this represents 26 physics quantities successfully described with very good fit quality within a constrained model which accounts for SU(3) breaking, nonet symmetry breaking in the pseudoscalar sector and, now, isospin symmetry breaking.