Search for new physics in CP violation with beauty and charm decays at LHCb

Abstract

The LHCb detector is one of the four large experiments collecting data at the LHC and is optimally designed to study Charge-Parity (CP) violation in beauty and charm hadrons. The LHCb collaboration has recently reported results from $B^0_s\rightarrow K^+K^-$ decays which show 4.0$\sigma$ evidence for time-dependent CP violation in the $B^0_s$ sector and measurements of the unitarity triangle angle $\gamma$ from $B^0_s\rightarrow D^{\mp}_sK^{\pm}$ decays, which are consistent with global fits from LHCb at 7 and 8 TeV. Measurements of CP violation in both $B^-\rightarrow D^-_{(s)} D^0$ and $D^0\rightarrow K^-\pi^+$ decays at 7 and 8 TeV show no evidence of CP violation while a combined measurement of $\Delta\textrm{A}_{\textrm{CP}}^{wgt}$ from $\Lambda_c^+\rightarrow ph^+h^-$ at 7, 8 and 13 TeV is also consistent with the hypothesis of CP conservation.