论文标题
隐藏和开放的重味辐射状态
Hidden and open heavy-flavor hadronic states
论文作者
论文摘要
我们讨论由两个或三个介子制成的隐藏和开放式重味的辐射状态的稳定性。参考文献是在有关包含重子的两个和三体系统的研究中。我们进行了一项比较研究，分析了夸克和强子自由度的结果。在非常具体的情况下发现紧凑和分子状态存在。我们估计不同情况下的衰减宽度：通过强烈的相互作用来绑定状态的弱衰减，以及在衰减阈值以上的强烈抗性衰减。理论上是合理的，对远高于其最低的衰减阈值的狭窄的黑龙的实验性观察是合理的。
We discuss the stability of hidden and open heavy-flavor hadronic states made of either two or three mesons. References are made in passing to studies regarding two and three-body systems containing baryons. We perform a comparative study analyzing the results in terms of quark and hadron degrees of freedom. Compact and molecular states are found to exist in very specific situations. We estimate the decay width for the different scenarios: weak decays for bound states by the strong interaction, and strong decays for hadronic resonances above a decay threshold. The experimental observation of narrow hadrons lying well above their lowest decay threshold is theoretically justified.
