论文标题
手性diquark图片中的双重笨重的tetraquarks
Doubly heavy tetraquarks in a chiral-diquark picture
论文作者
论文摘要
双重繁重的tetraquarks的能量谱，$ t_ {qq} $（$ qq \ bar {q} \ bar {q} $，$ q = c，b $和$ q = u，d，d，s $），在电位手法型模型中研究。使用diquarks的手性有效理论和基于夸克的潜在模型，$ t_ {bb} $，$ t_ {cc} $和$ t_ {cb} $ tetraquarks被描述为一个由两个重型夸克和一个反quark和一个反quark的三体系统。我们找到了几个$ t_ {bb} $绑定状态，而没有$ t_ {cc} $和$ t_ {cb} $（deep）绑定状态。我们还研究了手学对称性的恢复，$ t_ {qq} $ tetraquark群众的变化。
Energy spectrum of doubly heavy tetraquarks, $T_{QQ}$ ($QQ \bar{q} \bar{q}$ with $Q = c, b$ and $q = u, d, s$), is studied in the potential chiral-diquark model. Using the chiral effective theory of diquarks and the quark-diquark-based potential model, the $T_{bb}$, $T_{cc}$, and $T_{cb}$ tetraquarks are described as a three-body system composed of two heavy quarks and an antidiquark. We find several $T_{bb}$ bound states, while no $T_{cc}$ and $T_{cb}$ (deep) bound state is seen. We also study the change of the $T_{QQ}$ tetraquark masses under restoration of chiral symmetry.
