SMASH model and atmospheric neutrino mass splitting

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Das , C R , Huitu , K & Kärkkäinen , T 2019 , ' SMASH model and atmospheric neutrino mass splitting ' , Journal of Physics : Conference Series , vol. 1390 , 012076 . https://doi.org/10.1088/1742-6596/1390/1/012076

Title: SMASH model and atmospheric neutrino mass splitting
Author: Das, C.R.; Huitu, Katri; Kärkkäinen, Timo
Contributor: University of Helsinki, Helsinki Institute of Physics
University of Helsinki, Department of Physics
Date: 2019
Language: eng
Number of pages: 7
Belongs to series: Journal of Physics : Conference Series
ISSN: 1742-6588
URI: http://hdl.handle.net/10138/310498
Abstract: 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.
Subject: 114 Physical sciences
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