Since the two pion decay is much faster than the three pion decay, formula_102 was referred to as the short-lived Kaon formula_105, and formula_103 as the long-lived Kaon formula_107. The 1964 experiment showed that contrary to what was expected, formula_107 could decay to two pions. This implied that the long lived Kaon cannot be purely the CP eigenstate formula_103, but must contain a small admixture of formula_102, thereby no longer being a CP eigenstate. Similarly, the short-lived Kaon was predicted to have a small admixture of formula_103. That is,