Lifetimes of some $b$-flavored hadrons

Recent measurements of lifetimes of some $b$-flavored hadrons are presented and interpreted in the context of theoretical models, especially the Heavy Quark Expansion. Decay widths and decay width differences in the $B_s^0-{\bar{B}}_s^0$ system are discussed from studies of decays into the final states $J\mathrm{/}\psi K^{+}{K}^{-}$, $J\mathrm{/}\psi {\pi }^{+}{\pi }^{-}$, $D_s^{+}{D}_s^{-}$, $K^{+}{K}^{-}$, and $D_s^{\pm }{\pi }^{\mp }$. Lifetime measurements of the baryons ${\mathrm{\Lambda }}_b^0$, ${\mathrm{\Xi }}_b^{-}$, ${\mathrm{\Xi }}_b^0$, and ${\mathrm{\Omega }}_b^{-}$ are also shown.