$C{\hspace{-1.69998pt}}P$ violation in $B$ decays

Abstract

The experimental study of CP violation in $B$ decays has led to significant progress in our understanding of nature: (i) It demonstrated that the Kobayashi-Maskawa mechanism is the dominant source of CP violation in meson decays. (ii) It improved significantly the precision in the determination of the parameters of the Cabibbo–Kobayashi–Maskawa quark-mixing matrix. (iii) It proved that new physics that has order-one flavour-changing couplings to the $b$ quark should be characterised by a mass scale higher than $\mathcal{O}(10^3~\mathrm{TeV})$. Further progress is expected from the Belle II and LHC experiments during the next decade and beyond. Present status and perspectives are here discussed.

Keywords

• Meson
• Decay
• LHC
• Large Hadron Collider
• CP symmetry violation