U_e(1)--covariant R_ξ--gauge for the two Higgs doublet model

2009/06/29 by C. G. Honorato, J. J. Toscano · 1 citation
Physics and Astronomy · #hep-th

paper · pdf · doi:10.1007/s12043-009-0164-y

published as Pramana 73:1023-1039,2009

arxiv created 2009/06/29 · arxiv updated 2010/11/02

Abstract

An U_e(1)--covariant R_ξ gauge for the two Higgs doublet model based in the BRST symmetry is introduced. This gauge allows one to remove an important number of nonphysical vertices appearing in conventional linear gauges, which greatly simplifies the loop calculations, since the the resultant theory satisfies QED--like Ward identities. The presence of four ghost interactions in this type of gauges and its connection with the BRST symmetry is stressed. The Feynman rules for those new vertices that arise in this gauge, as well as for those couplings already present in the linear R_ξ gauge but that are modified by this gauge--fixing procedure, are presented.

Cited by

• Off-diagonal terms in Yukawa textures of the Type-III 2-Higgs doublet model and light charged Higgs boson phenomenology

Related

• New Symmetries of the Two-Higgs-Doublet Model
• The Two-Higgs Doublet Model beyond tree-level: A gauge-invariant formalism
• Gauge invariance and the physical spectrum in the two-Higgs-doublet model
• The Abelian Higgs model under a gauge invariant looking glass: exploiting new Ward identities for gauge invariant operators and the Equivalence Theorem
• Feynman Rules in the Two-Higgs Doublet Model Effective Field Theory