59Chris Parkes Key Points So Far K 0, K 0 are not CP eigenstates – need to make linear combination Short lived and long-lived Kaon states CP Violated (a tiny bit) in Kaon decays Describe this through K s, K L as mixture of K 0 K 0 Neutral mesons oscillate from particle to anti-particle Can describe neutral meson oscillations through mixture of P 0 P 0 Mass differences and width determine the rates of oscillations Very different for different mesons (B s,B,D,K) Weak and mass eigenstates of quarks are not the same Describe through rotation matrix – Cabibbo (2 generations), CKM (3 generations) CP Violation included by making CKM matrix elements complex Depict matrix elements and their relationships graphically with CKM triangle Three ways for CP violation to occur Decay Mixing Interference between decay and mixing
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