论文标题
手性夸克模型方法中的耦合强子 - 戴隆阈值
Coupling hadron-hadron thresholds within a chiral quark model approach
论文作者
论文摘要
直到过去一个世纪末，重型的强子光谱在天真的夸克模型中都得到了充分的理解。但是，在2003年，发现了$ x（3872）$，在简单的夸克模型图片中难以理解令人困惑的属性。该状态明确表示，重型介子的激发状态应耦合到两个膜状态，以便不仅了解群众，而且在某些情况下是意外的衰减特性。在这项工作中，我们将回顾一下如何将Naive Quark模型与两个强子阈值相连。该程序已经通过手性夸克模型应用于重型介体频谱，我们显示了一些阈值具有特殊相关性的示例。
Heavy hadron spectroscopy was well understood within the naive quark model until the end of the past century. However, in 2003, the $X(3872)$ was discovered, with puzzling properties difficult to understand in the simple naive quark model picture. This state made clear that excited states of heavy mesons should be coupled to two-meson states in order to understand not only the masses but, in some cases, unexpected decay properties. In this work we will review how the naive quark model can be complemented with the coupling to two hadron thresholds. This program has been already applied to the heavy meson spectrum with the chiral quark model and we show some examples where thresholds are of special relevance.
