Renormalization of the multi-Higgs-doublet Standard Model and one-loop lepton mass corrections
- Author(s)
- W. Grimus, M. Loeschner
- Abstract
Motivated by models for neutrino masses and lepton mixing, we consider the renormalization of the lepton sector of a general multi-Higgs-doublet Standard Model with an arbitrary number of right-handed neutrino singlets. We propose to make the theory finite by (MS) over bar renormalization of the parameters of the unbroken theory. However, using a general R zeta gauge, in the explicit one-loop computations of one-point and two-point functions it becomes clear that - in addition - a renormalization of the vacuum expectation values (VEVs) is necessary. Moreover, in order to ensure vanishing one-point functions of the physical scalar mass eigenfields, finite shifts of the tree-level VEVs, induced by the finite parts of the tadpole diagrams, are required. As a consequence of our renormalization scheme, physical masses are functions of the renormalized parameters and VEVs and thus derived quantities. Applying our scheme to one-loop corrections of lepton masses, we perform a thorough discussion of finiteness and zeta-independence. In the latter context, the tadpole contributions figure prominently.
- Organisation(s)
- Particle Physics
- Journal
- Journal of High Energy Physics
- No. of pages
- 49
- ISSN
- 1029-8479
- DOI
- https://doi.org/10.1007/JHEP11(2018)087
- Publication date
- 11-2018
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103012 High energy physics
- Keywords
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/renormalization-of-the-multihiggsdoublet-standard-model-and-oneloop-lepton-mass-corrections(ad4f95bd-8cc6-4fe1-aaa6-3987bba1d211).html