Measurement of the lifetime of the $B_c^{+}$ meson using the $B_c^{+}\to J/\psi {\pi }^{+}$ decay mode

LHCb collaboration, R. Aaij, B. Adeva +699

The difference in total widths between the $B_c^{+}$ and $B^{+}$ mesons is measured using 3.0fb${}^{-1}$ of data collected by the LHCb experiment in 7 and 8 TeV centre-of-mass energy pro…