LHCb: Lifetime measurements and angular analysis of $B_s \to J/\Psi\Phi$

Extracting the CP violating phase $\Phi_s$ from the channel $B_s \to J/\Psi\Phi$ is an important measurement for LHCb. This decay is a pseudoscalar to vector-vector transition and has three decay amplitudes which can be extracted by an angular analysis. Studies of untagged $B_s \to J/\Psi\Phi$ decays using LHCb data recorded in 2010 allows us to measure the lifetime difference in $B_s$ mesons and verifies the method for extracting the weak CP violating phase $\Phi_s$. Lifetime measurements for $B^+, B_d, B_s$ and $\Lambda_b$ will also be presented.