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We learn in the Standard Model that the gauge fields can be either in mass or gauge eigenstates. I wonder in the calculations with Feynmann diagram, which states should I use.

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  • $\begingroup$ Mass eigenstates may be more convenient as their propagators are diagonal. $\endgroup$ – user178876 Jun 29 '18 at 1:30
  • $\begingroup$ How about the vertices then? Which coupling should I use? $\endgroup$ – user43442 Jun 29 '18 at 17:55
  • $\begingroup$ For the standard model, they are all in the text books. $\endgroup$ – user178876 Jun 29 '18 at 18:03
  • $\begingroup$ Can you give me a reference book? $\endgroup$ – user43442 Jun 29 '18 at 18:53
  • $\begingroup$ If I remember correctly, Bailin & Love have the Feynman rules of the electroweak theory in. For the rest you do not have to worry. $\endgroup$ – user178876 Jun 29 '18 at 19:16

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