论文标题
QCD的重力介体的手性Lagrangian
Chiral effective Lagrangian for heavy-light mesons from QCD
论文作者
论文摘要
在适当的近似值下，我们在QCD的重夸克限制下为重灯室提供了手性有效的拉格朗日。有效拉格朗日语中的低能常数以光夸克自我能源表示。 QCD的运行耦合常数的典型形式和从dyson-Schinginger方程以及晶格QCD获得的夸克自能源，我们估计模型中的低能常数和强衰减宽度。给出了与数据的比较以及有关数值结果的一些讨论。
We derive the chiral effective Lagrangian for heavy-light mesons in the heavy quark limit from QCD under proper approximations. The low energy constants in the effective Lagrangian are expressed in terms of the light quark self-energy. With typical forms of the running coupling constant of QCD and the quark self-energy obtained from Dyson-Schwinger equations as well as lattice QCD, we estimate the low energy constants in the model and the strong decay widths. A comparison with data and some discussions of the numerical results are presented.
