11.  The vertices of the weak interaction

There are a number of basic vertices associated with the weak interaction. This is because both leptons and quarks are subjected to weak processes. As indicated in section 9, there are particle vertices and antiparticle vertices for each generation of leptons, for each generation of quarks and for quark changes that occur diagonally between generations. Typical vertices are summarised below. Each of the vertices will allow six orientations as shown in the electromagnetic vertex page. 

 

 


 

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