(Non-)mixing of K vector bosons

[Smithf]

Why don't the vector bosons K(0*) and K-bar(0*) mix the way the pseudo-scalar bosons,
K(0) and K-bar(0) do?

 

[Vanadium 50]

Please calculate the lifetime of the K* in units of the Kshort lifetime. Is the answer obvious now?

 

[Smithf]

I don't know how to do the suggested calculation -- I was expecting some sort of selection rule to apply

 

[Smithf]

Is the idea that the K* just decays too quickly into Kπ by a strong interaction?

 

[Vanadium 50]

Bingo.

And you do know how to do the calculation. Look up both numbers and divide.