论文标题
胶合球分子
Glueball-meson molecules
论文作者
论文摘要
对纯胶球状态的实验搜索已被证明具有挑战性，到目前为止尚未产生任何结果。人们认为这是因为胶球与具有相同量子数的普通$ q \ bar q $状态混合在一起。我们将讨论一种替代机制，即粘合球 - 丝逊分子状态的形成。我们将争辩说，由于这种分子状态，已经观察到的激发的介子状态的波函数可能包含重要部分。我们讨论了粘合球 - 梅森分子的现象学，并评论$ xyz $状态的可能的无魅力组成部分。
Experimental searches for pure glueball states have proven challenging and so far yielded no results. This is believed to occur because glueballs mix with the ordinary $q\bar q$ states with the same quantum numbers. We will discuss an alternative mechanism, the formation of the glueball-meson molecular states. We will argue that the wave functions of already observed excited meson states may contain a significant part due to such molecular states. We discuss the phenomenology of glueball-meson molecules and comment on a possible charmless component of the $XYZ$ states.
