  We succeed in reproducing the $\ell=1$ $B$ mesons, $B_1(5720)$,
$B_2^*(5745)$, and $B_{s2}^*(5839)$ that are recently reported by D0 and CDF,
by using our semirelativistic quark potentila model, which also succeeded in
predicting the mass spectra of the narrow $D_{sJ}$ as well as broad
$D_0^*(0^+)$ and $D_1'(1^+)$ particles a couple of years ago.
  Mass of higher excited states ($\ell=1, 2$) of $B$ and $B_s$ mesons, which
are not yet observed, is also predicted at the first order in $p/m_b$. We find
the corresponding $B_{sJ}$ are below $BK/B^*K$ threshold and should have narrow
decay widths contrary to most other predictions. Also already established
states ($\ell=0$ and $\ell=1$) of $D$, $D_s$, $B$, and $B_s$ heavy mesons are
simultaneously reproduced in good agreement with experimental data within one
percent of accuracy. To calculate these $D/D_s$ and $B/B_s$ heavy mesons we use
different values of strong coupling $\alpha_s$ which conforms to a notion of
running coupling.
