SMASH model and atmospheric neutrino mass splitting

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Five fundamental problems - neutrino mass, baryogenesis, dark matter, inflation, strong CP problem - are solved at one stroke in a model, dubbed as “SM-A-S-H” (Standard Model-Axion-Seesaw-Higgs portal inflation) by Andreas Ringwald et. al. The Standard Model (SM) particle content is extended by three right-handed SM-singlet neutrinos Ni , a vector-like color triplet quark Q, a complex SM-singlet scalar field σ that stabilises the Higgs potential, all of them being charged under Peccei-Quinn (PQ) U (1) symmetry, the vacuum expectation value vσ ∼ 1011 GeV breaks the lepton number and the Peccei-Quinn symmetry simultaneously. We found that numerically SMASH model not only solves five fundamental problems but also the sixth problem “Vacuum Metastability” through the extended scalar sector and can predict approximately correct atmospheric neutrino mass splitting around 0.05 eV and the solar neutrino mass splitting around 0.009 eV.
Original languageEnglish
JournalJournal of Physics : Conference Series
Number of pages7
Publication statusPublished - 2019
MoE publication typeA4 Article in conference proceedings
EventInternational Conference on Particle Physics and Astrophysics : ICPPA-2018 - Moscow, Russian Federation
Duration: 22 Oct 201826 Oct 2018
Conference number: 4

Fields of Science

  • 114 Physical sciences

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