  First order power corrections to current matrix elements between heavy meson
or $\Lambda_\Q$ baryon states are shown to vanish at the zero recoil point to
all orders in QCD. Five relations among the six form factors that parametrize
the semileptonic decay $\Lambda_b \to \Lambda_c e \overline{\nu}$ are also
demonstrated to exist to all orders in the strong coupling at order $1/\mQ$ .
The $O(\bas(m_c)/m_c)$ form factor relations are displayed.

High Energy Physics - Phenomenology