论文标题
在扩展的相对夸克模型中打开魅力和底部的tetraquarks
Open charm and bottom tetraquarks in an extended relativized quark model
论文作者
论文摘要
在目前的工作中，我们系统地计算出开放式魅力和底部tetraquarks $ q q \ bar q \ bar q $在扩展相关夸克模型中。通过使用变异方法来解决四体相关的哈密顿量，包括库仑电位，限制潜力，自旋旋转相互作用和相对论校正。据发现，预测的四个$ 0^+$ $ ud \ ud \ bar s \ bar c $状态为2765、3065、3152和3396 MEV，这不利于新观察到的$ x_0（2900）$作为紧凑型Tetraquark的分配。此外，开放式魅力和底部三夸克的整个质谱都显示出非常相似的图案，可以很好地保留浅色的风味SU（3）对称性和沉重的夸克对称性。此外，我们的结果表明，风味异国情调的状态$ nn \ bar s \ bar c $，$ nn \ bar s \ bar b $，$ ss \ bar n \ bar n \ bar c $，以及$ ss \ bar n \ bar n \ bar n \ bar n \ bar n \ bar b $及其对抗及其反植物，可以在重型Meson Plus Meson Plus Kaon Final Fastents中搜索。需要更多的理论和实验努力来研究这些单一的沉重的四夸克人。
In present work, we systematically calculate the mass spectra of open charm and bottom tetraquarks $q q\bar q \bar Q$ within an extended relativized quark model. The four-body relativized Hamiltonians including the Coulomb potential, confining potential, spin-spin interactions, and relativistic corrections are solved by using the variational method. It is found that the predicted masses of four $0^+$ $ud\bar s \bar c$ states are 2765, 3065, 3152, and 3396 MeV, which disfavor the assignment of the newly observed $X_0(2900)$ as a compact tetraquark. Moreover, the whole mass spectra of the open charm and bottom tetraquarks show quite similar patterns, which preserve the light flavor SU(3) symmetry and heavy quark symmetry well. In addition, our results suggest that the flavor exotic states $nn\bar s \bar c$, $nn\bar s \bar b$, $ss\bar n \bar c$, and $ss\bar n \bar b$ and their antiparticles can be searched in the heavy-light meson plus kaon final states by future experiments. More theoretical and experimental efforts are needed to investigate these singly heavy tetraquarks.
