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arXiv · 1812.01994

Investigating two heavy neutral leptons neutrino seesaw mechanism at SHiP

Marco Chianese·Damiano F. G. Fiorillo·Gennaro Miele·Stefano Morisi
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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 $0\nu\beta\beta$-rate on the active-sterile mixing angle are not significative for SHiP.

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Marco Chianese, Damiano F. G. Fiorillo, Gennaro Miele, Stefano Morisi. 2018-12-05. Investigating two heavy neutral leptons neutrino seesaw mechanism at SHiP. https://doi.org/10.1142/s0217751x19500477

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