Kinetic energy and speed powers $v^n$ of a heavy quark inside $S$ wave and $P$ wave heavy-light mesons

Wei Li, Tianhong Wang, Tai-Fu Feng +2

Based on the instantaneous Bethe-Salpeter equation method, we calculate the average values $\overline{|\vec{q}{|}^n}\equiv q^n$ and speed powers $\overline{|\vec{v}{|}^n}\equiv v^n$ (…