单美强子的激发
Excitations of single-beauty hadrons
摘要：
本文研究了含单重夸克强子的主要轨道和径向激发。我们提出了介子和重子质量分裂和介子衰变常数的比率（例如，$f_{B_s}/f_B$和$f_{B_s'}/f_{B_s}$）的猝灭和动力学双味配置。用手征改进的格点狄拉克算符模拟了价质量为$M_π\approx 350$ MeV的轻夸克。重夸克近似的静态传播子，适当的$b$夸克在我们的晶格（$1/a \sim 1-2$ GeV）。我们还包括一些初步的计算的$O(1/m_Q^{})$动力学修正的状态，显示，在这个过程中，一个可行的方法应用变分法涉及激发态的三点函数。我们将我们的结果与最近的实验结果进行比较。
英文摘要：
In this work we study the predominantly orbital and radial excitations of hadrons containing a single heavy quark. We present meson and baryon mass splittings and ratios of meson decay constants (e.g., $f_{B_s}/f_B$ and $f_{B_s'}/f_{B_s}$) resulting from quenched and dynamical two-flavor configurations. Light quarks are simulated using the chirally improved (CI) lattice Dirac operator at valence masses as light as $M_π\approx 350$ MeV. The heavy quark is approximated by a static propagator, appropriate for the $b$ quark on our lattices ($1/a \sim 1-2$ GeV). We also include some preliminary calculations of the $O(1/m_Q^{})$ kinetic corrections to the states, showing, in the process, a viable way of applying the variational method to three-point functions involving excited states. We compare our results with recent experimental findings.
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