Measurement of the Bs Meson Lifetime

The CDF Collaboration

The lifetime of the $B_s$ meson is measured using the semileptonic decay $B_s\to D_s^{-}{\ell }^{+}\nu X$. The data sample consists of 19.3 pb${}^{-1}$ of $p\bar{p}$ collisions at $\sqrt{s…