Is my Feynman diagram for K+ decay via W boson correct?

[billbray]

I've attached a feynman diagram i drew myself because i can't find a proper feyman diagram for this decay. I assume that since the decay K+->u+ + Vu is weak it goes via a W boson.

Is this diagram correct?

thanks

 

[IcedEcliptic]

I do not think this is quite correct. The decay should produce 3 pions, one plus and 2 minus.

See example 9

http://teachers.web.cern.ch/teachers/archiv/HST2002/feynman/examples.htm#Example 9

 

[Vanadium 50]

The diagram is correct. IcedEcliptic is talking about another decay channel.

 

[IcedEcliptic]

The diagram is correct. IcedEcliptic is talking about another decay channel.

Sorry, my mistake.

 

[billbray]

thanks guys!