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： 我们研究了在隐藏局部对称性（HLS）模型中如何生成同位旋对称性破坏。 我们表明，伪标量介子上的同位旋对称性破坏效应通过K介子环自然地在矢量介子的物理现象中引起相应的效应。 这样，可以恢复传统上从$\rho-\omg$混合中预期的所有特征，并找到支持Orsay相位模型对$e^+e^- \ra \pi^+ \pi^-$幅度的描述。 然后，我们检查一种有效的程序，该程序在HLS模型的整个$\rho$、$\omg$、$\phi$区域中生成混合。 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的两体衰变，仅排除$\rho \ra \pi \pi$和$K^* \ra K \pi$模式，这些模式提出了一个特定的问题。 与实验数据进行比较，涵盖了模和相位信息；这表示在考虑SU(3)破坏、伪标量区的九重态对称性破坏以及现在同位旋对称性破坏的约束模型中，成功描述了26个物理量，且拟合质量非常好。 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 physical 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.