Left–right symmetry, orbifold , and radiative breaking of

Abe, Yugo (National Institute of Technology, Miyakonojo College, Miyakonojo, Japan) ; Goto, Yuhei (Research and Education Center for Natural Science, Keio University, Yokohama, Japan) ; Kawamura, Yoshiharu (Department of Physics, Shinshu University, Matsumoto, Japan)

12 October 2018

Abstract: We study the origin of electroweak symmetry under the assumption that is realized on a five-dimensional space-time. The Pati–Salam-type gauge symmetry is reduced to by the orbifold breaking mechanism on the orbifold . The breakdown of residual gauge symmetries occurs radiatively via the Coleman–Weinberg mechanism, such that the symmetry is broken down to by the vacuum expectation value of an singlet scalar field and the symmetry is broken down to the electric one by the vacuum expectation value of an doublet scalar field regarded as the Higgs doublet. The negative Higgs squared mass term originates from an interaction between the Higgs doublet and an singlet scalar field as a Higgs portal. The vacuum stability is recovered due to the contributions from the Kaluza–Klein modes of gauge bosons.


Published in: PTEP 2018 (2018) 103B01
Published by: Oxford University Press/Physical Society of Japan
DOI: 10.1093/ptep/pty095
arXiv: 1804.08836
License: CC-BY-3.0



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