Masses and Lifetimes of B Hadrons

Abstract

The latest measurements of the masses and lifetimes of weakly decaying $B$~hadrons from experiments at $e^{+}{e}^{-}$ and $p\bar{p}$ colliders are presented. These measurements include the lifetimes of the ${\bar{B}}^0$, ${\bar{B}}_s^0$, $B^{-}$, and $b$~baryons, as well as searches for the $B_c$~meson. The observation of $B^{\ast }$, p-wave B~mesons ($B^{\ast \ast }$), and excited $b$~baryons using inclusive and exclusive $B$~hadron reconstruction are discussed. Results on $b$~quark flavour tagging are given. The latest measurements of the masses and lifetimes of weakly decaying $B$~hadrons from experiments at $e^{+}{e}^{-}$ and $p\bar{p}$ colliders are presented. These measurements include the lifetimes of the ${\bar{B}}^0$, ${\bar{B}}_s^0$, $B^{-}$, and $b$~baryons, as well as searches for the $B_c$~meson. The observation of $B^{\ast }$, p-wave B~mesons ($B^{\ast \ast }$), and excited $b$~baryons using inclusive and exclusive $B$~hadron reconstruction are discussed. Results on $b$~quark flavour tagging are given.

35 pages, 6 postscript figures