论文标题
底部数量最高的Dibaryons的AB-Initio研究
Ab-initio study of dibaryons with highest bottom number
论文作者
论文摘要
我们介绍了底部数量最高的Dibaryons的首次晶格研究。利用一组最先进的晶格QCD合奏和方法，我们确定了由两个$ω_{bbb} $ baryons组成的Dibaryon的基态。我们在$^1S_0 $通道中提取相关的散射幅度，并找到一个子阈值极点，该阈值表示深度绑定的$ω__{bbb}-Ω____________________{bbb} $ dibaryon的明确证据。发现该极点奇点所决定的这种状态的绑定能量为-81（$^{+14} _ { - 16} $）MEV。我们量化了该决定中涉及的各种系统不确定性，包括与激发态污染和库仑底座之间的相关的系统不确定性。
We present the first lattice study of dibaryons with highest bottom number. Utilizing a set of state-of-the-art lattice QCD ensembles and methodologies, we determine the ground state of dibaryon composed of two $Ω_{bbb}$ baryons. We extract the related scattering amplitude in the $^1S_0$ channel and find a sub-threshold pole, which signifies an unambiguous evidence for a deeply bound $Ω_{bbb}-Ω_{bbb}$ dibaryon. The binding energy of such a state as dictated by this pole singularity is found to be -81($^{+14}_{-16}$) MeV. We quantify various systematic uncertainties involved in this determination, including those related to the excited state contamination and Coulomb repulsion between the bottom quarks.
