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Homework Statement
Hello, I am trying to draw a Feynman Diagram at quark level for the decay sigma+ -> neutron + pi+.
Homework Equations
sigma+ -> neutron + pi+
uus -> udd + udbar
The Attempt at a Solution
Well, the attachment is what I came up with. I have no idea if it's right to be honest, I can't see anything wrong with it, but I have no idea how to be methodical about these kinds of drawings, and haven't found any particle physics texts to be much help.
Thanks for your help!
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