Measurement of the CP violating phase $Φ_s$ with CMS and ATLAS

Abstract

The phase $Φ_s$ is the key parameter for the CP-violation of the $B^0_s$-$\bar{B^0_s}$ system. An angular and proper decay time analysis is applied to the $B^0_s \rightarrow J/ψΦ$ events. Using a data sample collected by the CMS and ATLAS experiments in LHC Run1, the $B^0_s$ signal candidates are reconstructed and are used to extract the phase $Φ_s$. We present the latest update on the results in this decay channel.

Talk presented CIPANP2015. 8 pages, LaTeX, 7 pdf figures