论文标题
手性夸克·索利顿模型中的双重笨重的tetraquarks
Doubly Heavy Tetraquarks in the Chiral Quark Soliton Model
论文作者
论文摘要
手性夸克·索利顿模型已成功地用于描述魅力和底部的重型baryon频谱，从而得出结论，即重夸克对孤子没有影响。这表明，用颜色三重序列的重型反式$ \ bar {q} \ bar {q} $代替夸张的夸克，应该对重型四夸克人提供可行的描述。我们遵循这种策略来计算tetraquark群众。为了估算重型diquark质量，我们将康奈尔电位与适当重新缩放的参数使用。最轻的Tetraquark魅力高于$ dd^*$阈值70 mev。相反，非震撼力和奇怪的底部三夸克分别受约140 MEV和60 MEV的约束。
Chiral Quark Soliton Model has been successfully applied to describe heavy baryon spectrum, both for charm and bottom, leading to the conclusion that the heavy quark has no effect on the soliton. This suggests that replacing a heavy quark by a heavy anti-diquark $\bar{Q}\bar{Q}$ in color triplet should give a viable description of heavy tetraquarks. We follow this strategy to compute tetraquark masses. To estimate heavy diquark masses we use Cornell potential with appropriately rescaled parameters. The lightest charm tetraquark is 70 MeV above the $DD^*$ threshold. On the contrary, both non-strange and strange bottom tetraquarks are bound by approximately 140 MeV and 60 MeV, respectively.
