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Proof of the Equivalence Theorem in the Chiral Lagrangian Formalism

Hong-Jian He·Yu-Ping Kuang·Xiaoyuan Li
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Abstract

A general proof of the equivalence theorem in electroweak theories with the symmetry breaking sector described by the chiral Lagrangian is given in the $R_ξ$ gauge by means of the Ward-Takahashi identities. The precise form of the theorem contains a modification factor $C_{mod}$ associated with each external Goldstone boson similar to that in the standard model. $C_{mod}$ is exactly unity in our previously proposed renormalization scheme, {\it Scheme-II}.

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Hong-Jian He, Yu-Ping Kuang, Xiaoyuan Li. 1994-04-25. Proof of the Equivalence Theorem in the Chiral Lagrangian Formalism. https://doi.org/10.1016/0370-2693(94)90772-2

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