One of the main purposes of SHiP experiment is to shed light on neutrino mass generation mechanisms like the so-called seesaw. We consider a minimal type-I seesaw neutrino mass mechanism model with two heavy neutral leptons (right-handed or sterile neutrinos) with arbitrary masses. Extremely high active-sterile mixing angle requires a correlation between the phases of the Dirac neutrino couplings. Actual experimental limits on the half-life of neutrinoless double beta decay 0νββ-rate on the active-sterile mixing angle are not significative in constraining the masses or the mixing measurable by SHiP.
Investigating two heavy neutral leptons neutrino seesaw mechanism at SHiP
Chianese M.;Miele G.;
2019-01-01
Abstract
One of the main purposes of SHiP experiment is to shed light on neutrino mass generation mechanisms like the so-called seesaw. We consider a minimal type-I seesaw neutrino mass mechanism model with two heavy neutral leptons (right-handed or sterile neutrinos) with arbitrary masses. Extremely high active-sterile mixing angle requires a correlation between the phases of the Dirac neutrino couplings. Actual experimental limits on the half-life of neutrinoless double beta decay 0νββ-rate on the active-sterile mixing angle are not significative in constraining the masses or the mixing measurable by SHiP.File in questo prodotto:
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