The Average Kinetic Energy of the Heavy Quark in ${\Lambda }_b$ in the Bethe-Salpeter Equation Approach

Xin-Heng Guo, Heng-Kui Wu

In the previous paper, based on the $SU(2{)}_f\times SU(2{)}_s$ heavy quark symmetries of the QCD Lagrangian in the heavy quark limit, the Bethe-Salpeter equation for the heavy bar…