# Feynman diagram possible interaction

$$p+\Lambda^{0} \to n+\Sigma^{0}$$

So, I am trying to draw a Feynman diagram for the written interaction. Baryon number is conserved, charge is conserved, so that works. When I look at the quarks, I see that only one up quark changes to down quark, but still do not manage to see how to draw it. Because with the strong force quark should only change color, but nothing can come out from gluon. Or maybe this is impossible?

• Charge is not conserved in this reaction. – G. Smith Jul 3 '19 at 21:51