论文标题
$ p $ - 波 - 波的隐藏式异国情调的介子中的频谱
The Spectrum of $P$-Wave Hidden-Charm Exotic Mesons in the Diquark Model
论文作者
论文摘要
我们研究了已知和预测的负性隐性外来的介子状态的精细结构，该状态包括动力学diquark模型中最低$ p $ - 波型多重组。从先前显示出成功描述$ S $波状态的表格开始，我们开发了一个5参数的哈密顿量，其中包括旋转轨道和张量术语。在讨论了观察到的$ j^{pc} = 1^{ - } $状态$ y $相对于群众和衰减模式的实验状态（由重量夸克旋转的特征值分类），我们注意到来自不同实验的测量值之间的许多不一致性使光谱的独特确定。我们概述了解释$ y $数据的各种方案，我们对每个方案进行了适合，从而获得了结果，这些结果证明了$ p $ - 波光谱的可能性不同。选择其中一种用于插图，我们预测了这款$ 1p $倍数中所有28个等杂质的质量，将结果与数据中的提示进行比较，并讨论了新状态的丰富发现潜力。
We study the fine structure in the spectrum of known and predicted negative-parity hidden-charm exotic meson states, which comprise the lowest $P$-wave multiplet in the dynamical diquark model. Starting with a form previously shown to successfully describe the $S$-wave states, we develop a 5-parameter Hamiltonian that includes spin-orbit and tensor terms. After discussing the experimental status of the observed $J^{PC} = 1^{--}$ states $Y$ with respect to masses and decay modes (classified by eigenvalues of heavy-quark spin), we note a number of inconsistencies between measurements from different experiments that complicate a unique determination of the spectrum. Outlining a variety of scenarios for interpreting the $Y$ data, we perform fits to each one, obtaining results that demonstrate differing possibilities for the $P$-wave spectra. Choosing one of these fits for illustration, we predict masses for all 28 isomultiplets in this $1P$ multiplet, compare the results to tantalizing hints in the data, and discuss the rich discovery potential for new states.
