论文标题
在动态diquark模型中，隐藏底和隐藏障碍/奇怪的异种
Spectrum of the Hidden-Bottom and the Hidden-Charm/Strange Exotics in the Dynamical Diquark Model
论文作者
论文摘要
动力学diquark模型中最轻的底部tetraquarks填充了由12个Isomultiplet组成的$ S $ - 波多重；我们使用简单的3参数哈密顿量预测它们的质量和主导的底部衰减通道，该杂志捕获了模型的核心精细结构特征，包括等音依赖性。唯一需要的实验输入是$ z_b（10610）$和$ z_b（10650）$的相应可观察力。 $ x_b $的质量是$ x（3872）$的底部类似物，在此方案中受到了极大的限制。此外，使用晶格计算的电位，我们预测了$ p $ - 波型多重质量中心的位置，发现$ y（10860）$非常适合，但新发现的$ y（10750）$并没有，更合理地是$ d $ - $ d $ -wave botomenium tostonium nate。使用类似的方法，我们还检查了6 $ c \ bar c s \ bar s $状态的最低$ s $ - 波多重；假设在较早的工作中，$ x（3915）$和$ y（4140）$是成员，并预测其他州的群众和主导地位腐烂模式。我们再次使用格子电位来计算较高多重的质量中心，并发现它们与$ y（4626）$（$ 1p $）和$ x（4700）$（$ 2S $）的质量兼容。
The lightest hidden-bottom tetraquarks in the dynamical diquark model fill an $S$-wave multiplet consisting of 12 isomultiplets. We predict their masses and dominant bottomonium decay channels using a simple 3-parameter Hamiltonian that captures the core fine-structure features of the model, including isospin dependence. The only experimental inputs needed are the corresponding observables for $Z_b(10610)$ and $Z_b(10650)$. The mass of $X_b$, the bottom analogue to $X(3872)$, is highly constrained in this scheme. In addition, using lattice-calculated potentials we predict the location of the center of mass of the $P$-wave multiplet and find that $Y(10860)$ fits well but the newly discovered $Y(10750)$ does not, more plausibly being a $D$-wave bottomonium state. Using similar methods, we also examine the lowest $S$-wave multiplet of 6 $c\bar c s\bar s$ states, assuming as in earlier work that $X(3915)$ and $Y(4140)$ are members, and predict the masses and dominant charmonium decay modes of the other states. We again use lattice potentials to compute the centers of mass of higher multiplets, and find them to be compatible with the masses of $Y(4626)$ ($1P$) and $X(4700)$ ($2S$), respectively.
