Gerald Eigen (University of Bergen (NO))
The large amount of Heavy Flavour data collected by the ATLAS experiment is potentially sensitive to New Physics, which may be found in the mixing of B meson states, or through processes that are naturally suppressed in the Standard Model. We present the most recent results on the measurement of the decay of the Bs into J/psi phi based on full data collected in LHC Run-1 and with updated flavour tagging improving the accuracy in the CP-violating phase phi_s. We also discuss the measurement of the decay time difference in the Bd system and the most recent results on the search for the rare decay Bs (B0) -> mu+mu- as well as results on the angular distribution parameters describing the decay Bd -> K*mu+mu- -> K+pi-mu+mu-.
Cristobal Padilla Aranda (IFAE-Barcelona (ES))