标题： 轻介子的夸克结构 显示英文标题

标题： The Quark Structure of Light Mesons

摘要： 我们介绍了基于Bethe-Salpeter方程的协变夸克模型的结果，其中通过类似弦的线性势能实现禁闭，从而解释了Regge轨迹。瞬子诱导的夸克力不仅解释了伪标量介子的分裂和混合，还表明这些效应也存在于标量谱中，并在标量粒子衰变为伪标量粒子时表现出OZI规则的破坏。我们证明，在描述深度束缚态和/或高动量传递过程的性质时，考虑振幅中的相对论成分的协变处理至关重要。 显示英文摘要

摘要： We present the results of a covariant constituent quark model, based on the Bethe-Salpeter equation, where confinement is implemented by a string like linear potential explaining the Regge trajectories. An instanton induced quark force explains not only the splitting and mixing of pseudoscalar mesons, but suggest that such effects are also present in the scalar spectrum and in a violation of the OZI rule in the decays of scalar particles into pseudoscalars. We demonstrate that a covariant treatment that takes into account the relativistic components in the amplitudes is of utmost importance when describing properties of deeply bound states and/or processes at higher momentum transfer.