论文标题
$ n_f = 2+1+1+1 $ lattice QCD与精确手性对称性
Beauty mesons in $N_f=2+1+1+1 $ lattice QCD with exact chiral symmetry
论文作者
论文摘要
我们介绍了$ n_f = 2+1+1+1 $ lattice QCD的第一个研究，带有域墙夸克。 $（b，c，s）$ quarks是物理的，而$（u，d）$夸克比其物理质量重，带有Pion Mass $ \ sim 700 $ MEV。仪表合奏是由粘合剂的Wilson仪表作用以及夸克的最佳域壁操作产生的。使用点对点夸克传播器，我们测量了带有夸克内容$ \ bar b b $，$ \ bar b c $，$ \ bar b c $，$ \ bar b s $和$ \ bar b s $和$ \ bar c c $的夸克 - 安提克克式介子内插器的时间相关函数，并获得大量的低灯罩。它们与实验值非常吻合，以及在实验中尚未观察到的一些预测。此外，我们还确定了$（b，c，s）$ quarks的质量。
We present the first study of $N_f=2+1+1+1$ lattice QCD with domain-wall quarks. The $(b, c, s)$ quarks are physical, while the $(u, d)$ quarks are heavier than their physical masses, with the pion mass $ \sim 700 $ MeV. The gauge ensemble is generated by hybrid Monte Carlo simulation with the Wilson gauge action for the gluons, and the optimal domain-wall fermion action for the quarks. Using point-to-point quark propagators, we measure the time-correlation functions of quark-antiquark meson interpolators with quark contents $\bar b b$, $\bar b c$, $\bar b s$, and $ \bar c c$, and obtain the masses of the low-lying mesons. They are in good agreement with the experimental values, plus some predictions which have not been observed in experiments. Moreover, we also determine the masses of $(b, c, s)$ quarks.
