Feymann diagram help

  • Thread starter venomxx
  • Start date
1. The problem statement, all variables and given/known data
B+ --> Do + u+ + Vu

B and D are mesons and u is a muon and Vu its corrosponding neutrino.
B composition u b*
Do composition c u*

Where * denotes the antiquark....

3. The attempt at a solution

I can do most diagrams, but this one is killing me!! I have looked up the Cern branching ratios and have seen that this is possible but can anyone point me in the right direction for drawing it?

I have the D+ going to a W+ and Z boson, the W+ gives the Muon and neutrino and the Z the Do, but the Z cant couple to anti-u and c quarks....therefore my problem!

Cheers
 

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