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Homework Statement
I'm trying to get familiar with how to use the CKM matrix when tackling such questions as "which of these two decays is more likely".
My example question is:
Which is more likely c[tex]\bar{d}[/tex] ---> s[tex]\bar{d}[/tex] or c[tex]\bar{d}[/tex] ---> d[tex]\bar{d}[/tex]
Homework Equations
The relationship between the weak eigenstates, the CKM matrix and the mass eigenstates:
([tex]\acute{d}[/tex]) (Vud Vus Vub) (d)
([tex]\acute{s}[/tex]) = (Vcd Vcs Vcb) (s)
([tex]\acute{t}[/tex]) (Vtd Vts Vtb) (t)
The Attempt at a Solution
I don't actually know where to start because I'm not sure how to use the CKM matrix in this way.
Here's my best guess:
The difference between the two interactions is that one has c--->s and the other has c--->d and the value of the element Vcd < Vcs so the most likely is c--->s so the most likely decay is c[tex]\bar{d}[/tex] ---> s[tex]\bar{d}[/tex].
Any help with this is much appreciated.