Measurement of Bc Mass and Lifetime at LHCb

The $B_c^{\pm }$ mass and lifetime measurements using the decay $B_c^\pm \to J/\psi \pi^\pm$ at the LHCb experiment were studied. About 310 signal events are expected for a data set which corresponds to an integrated luminosity of 1 fb${}^{-1}$, with a $B\mathrm{/}S$ ratio equal to 2. Based on these data, the $B_c^{\pm }$ mass and lifetime can be measured with expected statistical errors below 2 MeV/$c^2$ and 30 fs, respectively.