Tests of CP violation in B-meson mixing and decay are a powerful tool to search for new physics and constrain Standard Model parameters.
We report on two recent measurements of CP asymmetries in B mesons, performed by the LHCb and the ATLAS experiments respectively.
The CP asymmetry in the mixing of Bs and anti-Bs is measured with the LHCb detector, yielding the most precise measurement to date of the semileptonic asymmetry a^s_sl.
The ATLAS collaboration has performed the first measurement of charge and CP asymmetries in b-decays originated from top quark events, deriving competitive
limits on direct CP asymmetries. These measurements will be presented and discussed alongside future prospects.