Measurement of the $B_c^{-}$ meson lifetime in the decay $B_c^{-}\to J/\psi {\pi }^{-}$

CDF Collaboration

The lifetime of the $B_c^{-}$ meson is measured using 272 exclusive $B_c^{-}\to J/\psi (\to {\mu }^{+}{\mu }^{-}){\pi }^{-}$ decays reconstructed in data from proton-antiproton collisions corresponding…