2020/08/31 by Alex G. Dias, Julio Leite, J. W. F. Valle +2 · 1 citation
Physics and Astronomy · #Anomaly (physics) #Axion #Cosmology and Gravitation Theories #Coupling (piping) #Dark Matter and Cosmic Phenomena #Dark matter #Electroweak interaction #Gauge (firearms) #Neutrino #Particle physics #Particle physics theoretical and experimental studies #Photon #Physics #Physics beyond the Standard Model #Quantum mechanics #Quark #Seesaw mechanism #Seesaw molecular geometry #Standard Model (mathematical formulation) #Strong CP problem #hep-ex #hep-ph #hep-th
paper · pdf · doi:10.1016/j.physletb.2020.135829
16 pages, 1 table, 2 figures. v2: matches the accepted version to appear in PLB
openalex publication_date 2020/10/01 · arxiv created 2020/10/06 · arxiv updated 2020/10/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We generalize the idea of the axion to an extended electroweak gauge symmetry setup. We propose a minimal axion extension of the Singer-Valle-Schechter (SVS) theory, in which the standard model fits in SU(3)L⊗U(1)X, the number of families results from anomaly cancellation, and the Peccei-Quinn (PQ) solution to the strong-CP problem is implemented. Neutrino masses arise from a type-I Dirac seesaw mechanism, suppressed by the ratio of SVS and PQ scales, suggesting the existence of new physics at a moderate SVS scale. Novel features include an enhanced axion coupling to photons when compared to the DFSZ axion, as well as flavor-changing axion couplings to quarks.