First off, what is a mass eigenstate?! Is there a (hermitian) operator associated to mass? What should I picture when discussing a non-mass-eigenstate?! The same goes for a 'weak eigenstate' as the CKM matrix is supposed to be the basis transformation between these two...(adsbygoogle = window.adsbygoogle || []).push({});

The I read that 'a linear transformation which diagonalizes the mass terms of the u-type quarks does not necessarily diagonalize those of the d-type quarks.'

What does this mean, and why not?! :grumpy:

Finally, I rwill be very much helped by any insight on the meaning of this matrix and its properties, e.g. why its unitary...?

Sorry, the more I learn the less I seem to know...

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# CKM Matrix and mass eigenstates

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