论文标题
手性夸克模型中有陌生的双重tetraquarks
Double-heavy tetraquarks with strangeness in the chiral quark model
论文作者
论文摘要
最近，在实验中的双重tetraquarks上取得了一些进展，例如LHCB合作报告的$ t_ {cc} $，以及$ x_ {cc \ bar {s} \ bar {s}} $ belle Collaboration。紧随我们以前的作品的紧随其后，大约$ t_ {cc} $和$ t_ {bb} $，我们介绍了一项有关其伴侣$ qq \ qq \ bar {q} \ bar {s} $（$ q = c，q = c，b; q = q = q = q = u，s $）Tetraquarks in Chancter the Chryal floate的研究。我们的计算中考虑了两张图片，一张带有介子 - 梅森图片，另一张带有diquark-antidiquark图片及其耦合的图片。本文中忽略了违规的同胞。我们的数值分析表明，只有$ \ frac {1} {1} {2} {2}（1^+）$的状态$ bb \ bar {u} \ bar {s} $是绑定的，绑定能量3.5 meV。此外，我们还使用真实的缩放方法找到了一些双重奇怪的四夸克人的共鸣状态。
Recently, some progresses have been made on the double-heavy tetraquarks in the experiments, such as $T_{cc}$ reported by LHCb Collaboration, and $X_{cc\bar{s}\bar{s}}$ reported by the Belle Collaboration. Coming on the heels of our previous work about $T_{cc}$ and $T_{bb}$, we present a study on the bound states and the resonant states of its companions $QQ\bar{q}\bar{s}$ ($Q=c,b; q=u, s$) tetraquarks with strange flavor in the chiral quark model. Two pictures, one with meson-meson picture, another with diquark-antidiquark picture and their couplings are considered in our calculations. Isospin violation is neglected herein. Our numerical analysis indicates that only the state $bb\bar{u}\bar{s}$ with $\frac{1}{2}(1^+)$ is bound, with the binding energy 3.5 MeV. Besides, we also find some resonant states for the double-heavy strange tetraquarks with the real scaling method.
