View Single Post
Mar20-11, 03:52 AM
P: 11
Thanks Diazona. I just wanted to double check that, as I have never seen an example of that occurring!

Also, since I have a c [tex]\rightarrow[/tex] u and W+ [tex]\rightarrow[/tex] u + anti-s I have two vertices for the decay D0 [tex]\rightarrow[/tex] K+ + [tex]\pi[/tex]-. This means the total decay rate will depend on the square of the coupling constants gcu and guanti-s multiplied togther.

But because of the CKM matrix gcu = gwsin[tex]\vartheta[/tex]c and guanti-s = gwsin[tex]\vartheta[/tex]c. Where gw is given to be 10^-5

So the total decay rate for D0 [tex]\rightarrow[/tex] K+ + [tex]\pi[/tex]- ~ g2cug2uanti-s = (gwsin[tex]\vartheta[/tex]c)2

Is this right?