CP violation and CKM studies (and first LHCb Run II results)

Understand

The LHC is the new b-hadron factory and will be dominating flavour physics until the start of Belle II, and beyond in many decay modes.

• While the $B$ factories and Tevatron experiments are still analysing their data, ATLAS, CMS and LHCb are producing interesting new results in CP violation and rare decays, that set strong constraints on models beyond that SM and exhibit some discrepancies with the SM predictions.
• The LHCb collaboration used the LHC 50 ns ramp-up period of July 2015 to measure the double-differential $J/\psi$, $J/\psi$-from-$b$-hadron and charm cross-sections at $\sqrt{s} = 13$ TeV.
• Both measurements were performed directly on triggered candidates using a reduced data format that does not require offline processing.