Monochromatic neutrinos generated by dark matter and the see-saw mechanism

Abstract

We study a minimal extension of the Standard Model where a scalar field is coupled to the right handed neutrino responsible for the see-saw mechanism for neutrino masses. In the absence of other couplings, below 8 TeV the scalar $A$ has a unique decay mode $A\to \nu \nu$, $\nu$ being the physical observed light neutrino state. Above 8 (11) TeV, the 3-body (4-body) decay modes dominate. Imposing constraints on neutrino masses $m_{\nu }$ from atmospheric and solar experiments implies a long lifetime for $A$, much larger than the age of the Universe, making it a natural dark matter candidate. Its lifetime can be as large as $10^{29}$ seconds, and its signature below 8 TeV would be a clear monochromatic neutrino signal, which can be observed by ANTARES or IceCube. Under certain conditions, the scalar $A$ may be viewed as a Goldstone mode of a complex scalar field whose vacuum expectation value generates the Majorana mass for ${\nu }_R$. In this case, we expect the dark matter scalar to have a mass $\lesssim 10$ GeV.

7 pages, 4 figures, version accepted for publication in PRD [references and 3/4- body decay added in the analysis for completeness]

References in corpus (15)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC
• Flavour Matters in Leptogenesis
• First dark matter search results from a 4-kg CF${}_3$I bubble chamber operated in a deep underground site
• Constraints on Low-Mass WIMP Interactions on 19F from PICASSO
• Flavour Covariant Transport Equations: an Application to Resonant Leptogenesis
• Decaying warm dark matter and neutrino masses
• Strongest model-independent bound on the lifetime of Dark Matter
• A Measurement of Atmospheric Neutrino Flux Consistent with Tau Neutrino Appearance
• Model-Independent Bound on the Dark Matter Lifetime
• X-ray photons from late-decaying majoron dark matter
• Connecting neutrino physics with dark matter
• Inflation and majoron dark matter in the seesaw mechanism
• Multiple Point Principle of the Standard Model with Scalar Singlet Dark Matter and Right Handed Neutrinos
• The Seesaw with Many Right-Handed Neutrinos

Cited by in corpus (24)

• Design and Sensitivity of the Radio Neutrino Observatory in Greenland (RNO-G)
• Boosted Dark Matter in IceCube and at the Galactic Center
• Supernova Constraints on Massive (Pseudo)Scalar Coupling to Neutrinos
• Gravity as a Portal to Reheating, Leptogenesis and Dark Matter
• Interpreting IceCube 6-year HESE data as an evidence for hundred TeV decaying Dark Matter
• Tau Neutrinos in the Next Decade: from GeV to EeV
• A Dark Matter Interpretation of the ANITA Anomalous Events
• Dark Matter interpretation of low energy IceCube MESE excess
• The case for decaying spin-3/2 dark matter
• Tsallis cosmology and its applications in dark matter physics with focus on IceCube high-energy neutrino data
• Boosted Neutrinos and Relativistic Dark Particles as Messengers from Reheating
• Updated Constraints and Future Prospects on Majoron Dark Matter
• A Model of Metastable EeV Dark Matter
• Probing dark matter signals in neutrino telescopes through angular power spectrum
• The Spectrum of Dark Radiation as a Probe of Reheating
• Post-Inflationary Dark Matter Bremsstrahlung
• Neutrino lines from DM decay induced by high-scale seesaw interactions
• Dark matter produced from neutrinos
• PeV Scale Right Handed Neutrino Dark Matter in $S_4$ Flavor Symmetric extra U(1) model
• Metastable Conformal Dark Matter
• Scrutinizing a di-photon resonance at the LHC through Moscow zero
• Neutrino masses, matter-antimatter asymmetry, dark matter, and supermassive black hole formation explained with Majorons
• LHAASO Galactic Plane $\gamma$-rays Strongly Constrain Heavy Dark Matter
• Search for dark matter using sub-PeV $\mathbf{\gamma }$-rays observed by Tibet AS${}_{\mathbf{\gamma }}$