Recent content by Y Y Kim

Yes I agree with your argument on charge. But actually I think I didn't understand the relation between a conserved quantity and mixed state. Also, I am confused because I cannot find 'a mixed state of charged and neutral states' as you said, but can find 'a mixed state of CP even and CP odd...

Thank you! But, we can write K0 as K0=(K1+K2)/sqrt(2). This is a mixed state of CP even and CP odd states. What is the problem? Furthermore, I learned that conserved quantity is 'expectation value', so it seems to be no problem because K0's parity expectation value is 1/2*1+1/2*(-1)=0.

Below are the statements in the "David Griffiths, Introduction to Elementary Particles 2nd Edition, 147~148 p.": Evidently, the long-lived neutral kaon is not a perfect eigenstate of CP after all, but contains a small admixture of K1. The coefficient epsilon is a measure of nature's departure...