Answer to Question #125555 in Physics for Moh Cary

Question

what do you think of a neutral kaon decay shows cp violation? support your answer by experimental aspects.

Answer 1

Neutral kaons decay so that K_S (with a shorter lifetime) disappears, leaving K_L (with a longer lifetime). In 1964, Cronin and Fitch discovered that K_L decays into two pions (CP=+1). This decay involves CP-symmetry violation. Later it was figured out that K_L and K_S are weak eigenstates and what happens to them is called indirect CP violation