2019/04/30 by Soumita Pramanick · 21 citations
Mathematics · Physics and Astronomy · #Astrophysics and Cosmic Phenomena #CP violation #Geometry #MAJORANA #Mathematics #Mixing (physics) #Neutrino #Neutrino Physics Research #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum mechanics #Scalar (mathematics) #hep-ph
paper · pdf · doi:10.1103/physrevd.100.035009
published in Physical review. D/Physical review. D. 100(3) (American Physical Society) · 15 pages, 2 figures, 3 tables, v2: version published in Physical Review D
openalex created_date 2019/04/25 · openalex publication_date 2019/08/12 · arxiv created 2019/09/17 · arxiv updated 2019/09/18 · openalex updated_date 2026/08/05
Realistic neutrino mixing is achieved at a one-loop level radiatively using S3\ifmmode×\else\texttimes\fiZ2 symmetry. The model is comprised of two right-handed neutrinos, maximally mixed to produce the structure of the left-handed Majorana neutrino mass matrix characterized by \ensuremathθ13=0, \ensuremathθ23=\ensuremathπ/4, and any value of \ensuremathθ120 particular to the tribimaximal (TBM), bimaximal (BM) and golden ratio (GR) or other mixings. A small deviation from this maximal mixing between the two right-handed neutrinos could generate nonzero \ensuremathθ13, shifts of the atmospheric mixing angle \ensuremathθ23 from \ensuremathπ/4, and also could correct the solar mixing angle \ensuremathθ12 by a small amount altogether in a single step. In this scotogenic mechanism of generating a nonzero \ensuremathθ13 by shifting from the maximal mixing in the right-handed neutrino sector, two Z2 odd inert scalar SU(2)L doublets were used, the lightest of which can serve as a dark matter candidate.