- #1
genloz
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Homework Statement
The decay
[tex]D^{+} \rightarrow D^{0} \pi^{+}[/tex]
is not possible via a weak interaction which involves one virtual W+ meson. How many virtual W mesons are required?
Homework Equations
D0 has quark content c-ubar
Pi+ has quark content u-dbar
I'm not sure what D+ has...
The Attempt at a Solution
Assuming D+ has c-dbar...
how do you determine whether a virtual meson is involved or not and how many? Is it energy based?