2017/01/09 by Frank F. Deppisch, Chandan Hati, Sudhanwa Patra +2 · 1 citation
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Double beta decay #Electron #Higgs boson #Lepton #Lepton number #MAJORANA #Neutrino #Neutrino Physics Research #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Seesaw mechanism #Seesaw molecular geometry #hep-ph
paper · pdf · doi:10.1103/physrevd.97.035005
published as Phys. Rev. D 97, 035005 (2018) · 9 pages, 3 figures, regular article
arxiv created 2017/01/09 · openalex created_date 2017/01/26 · openalex publication_date 2018/02/06 · arxiv updated 2018/02/14 · openalex updated_date 2026/08/05
We discuss a class of left-right symmetric theories with a universal seesaw mechanism for fermion masses and mixing and the implications for neutrinoless double beta (0\ensuremathν\ensuremathβ\ensuremathβ) decay where neutrino masses are governed by natural type-II seesaw dominance. The scalar sector consists of left- and right-handed Higgs doublets and triplets, while the conventional Higgs bidoublet is absent in this scenario. We use the Higgs doublets to implement the left-right and the electroweak symmetry breaking. On the other hand, the Higgs triplets with induced vacuum expectation values can give Majorana masses to light and heavy neutrinos and mediate 0\ensuremathν\ensuremathβ\ensuremathβ decay. In the absence of the Dirac mass terms for the neutrinos, this framework can naturally realize type-II seesaw dominance even if the right-handed neutrinos have masses of a few TeV. We study the implications of this framework in the context of 0\ensuremathν\ensuremathβ\ensuremathβ decay.