$B^0_s$ lifetime measurement from the decay $B^0_s \rightarrow J/\psi f_0(980)$

The $B^0_s$ meson is in general a superposition of CP-even and CP-odd states, which are expected to have different lifetimes. The decay $B^0_s \rightarrow J/\psi f_0(980)$ must be a pure CP-odd (orbital angular momentum $L=1$) state due to conservation of angular momentum. Measurement of the $B^0_s$ lifetime from this decay should therefore yield information on the CP-odd $B^0_s$ lifetime. We report on the $B^0_s \rightarrow J/\psi f_0(980)$ lifetime measurement using the full Run II dataset collected by the D0 detector at the Fermilab Tevatron collider.