Regular Article - Theoretical Physics
Probing effective field theory approach in the CP violating minimal linear model
Departamento de Física Teórica and Instituto de Física Teórica UAM/CSIC, Universidad Autónoma de Madrid, Cantoblanco, 28049, Madrid, Spain
2 Physik-Institut, Universität Zürich, 8057, Zurich, Switzerland
3 National Centre for Nuclear Research (NCBJ), Pasteura 7, 02-093, Warsaw, Poland
4 Faculty of Physics, Institute of Theoretical Physics, University of Warsaw, Pasteura 5, 02-093, Warsaw, Poland
Accepted: 10 June 2021
Published online: 23 June 2021
The Minimal Linear Model is a useful theoretical laboratory. One can investigate in a perturbative renormalisable model the properties of the Higgs boson as a pseudo-Goldstone boson, the phenomenological effects of the radial mode of the field which spontaneously breaks the global SO(5) symmetry and the validity of conclusions based on the Effective Field Theory approach with the field in the spectrum, after the decoupling of heavy degrees of freedom. In this paper all those issues are discussed in the framework of the Minimal Linear Model with CP violating phases leading to pseudoscalar components in the effective Standard Model Yukawa couplings. Also the character of the electroweak phase transition in the presence of the field is investigated.
© The Author(s) 2021
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