Lifetimes of some $b$-flavored hadrons

Abstract

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 $B_s^0-{\overline{B}}_s^0$ system are discussed from studies of decays into the final states $J/\psi K^{+}{K}^{-}$, $J/\psi {\pi }^{+}{\pi }^{-}$, $D_s^{+}{D}_s^{-}$, $K^{+}{K}^{-}$, and $D_s^{\pm }{\pi }^{\mp }$. Lifetime measurements of the baryons ${\Lambda }_b^0$, ${\Xi }_b^{-}$, ${\Xi }_b^0$, and ${\Omega }_b^{-}$ are also shown.

Comments: Presented at 2014 Flavor Physics and CP Violation (FPCP-2014) Marselle, France, May 26-30, 2014;19 pages, 17 figures, to appear in the proceedings