Using the basic weak interaction vertex involving W boson and two quarks or leptons given in the figure below, draw a Feynman diagram to represent the following process.

${\mathrm{\pi }}^{+}\to {\mathrm{\mu }}^{-}+{\mathrm{v}}_{\mathrm{\mu }}$

 

Using the basic weak interaction vertex involving W boson and two quarks or leptons given in the figure below, draw a Feynman diagram to represent the following process.

$K^{-}\to {\mu }^{-}+{\overline{v}}_{\mu }$

Using the basic weak interaction vertex involving a W boson and two quarks and leptons given in below figure, state three possibly ways in which the W boson can decay.

Using the basic weak interaction vertex involving a Z boson and two quarks and leptons as given in the figure. Draw a Feynman diagram to represent the following process.

$e^{-}+e^{+}\to {\overline{v}}_{\mu }+v_{\mu }$

Using the basic weak interaction vertex involving a Z boson and two quarks and leptons as given in the figure. Draw a Feynman diagram to represent the following process.

$e^{-}+v_{\mu }\to e^{-}+v_{\mu }$

Using the basic weak interaction vertex involving a Z boson and two quarks and leptons as given in the figure. Draw a Feynman diagram to represent the following process.