Sterile Neutrino portal to Dark Matter II: Exact Dark symmetry

Abstract

We analyze a simple extension of the Standard Model (SM) with a dark sector composed of a scalar and a fermion, both singlets under the SM gauge group but charged under a dark sector symmetry group. Sterile neutrinos, which are singlets under both groups, mediate the interactions between the dark sector and the SM particles, and generate masses for the active neutrinos via the seesaw mechanism. We explore the parameter space region where the observed Dark Matter relic abundance is determined by the annihilation into sterile neutrinos, both for fermion and scalar Dark Matter particles. The scalar Dark Matter case provides an interesting alternative to the usual Higgs portal scenario. We also study the constraints from direct Dark Matter searches and the prospects for indirect detection via sterile neutrino decays to leptons, which may be able to rule out Dark Matter masses below and around 100 GeV.

v2: WIMP-nucleon scattering cross section constraints overestimated, some figures have changed accordingly. LUX and PANDAX limits updated. H.E.S.S. limits added. v3: Matches the published version. Feynman diagrams included. Improved discussion in Sec 5. Discussion on the thermal history of the model provided in Sec 4. Main conclusions remain unchanged

References in corpus (14)

• Updated fit to three neutrino mixing: status of leptonic CP violation
• Indirect Dark Matter Signatures in the Cosmic Dark Ages I. Generalizing the Bound on s-wave Dark Matter Annihilation from Planck
• Complex Singlet Extension of the Standard Model
• Simplified Dark Matter Models for the Galactic Center Gamma-Ray Excess
• Heavy Dark Matter Through the Higgs Portal
• WIMP dark matter, Higgs exchange and DAMA
• The Poker Face of the Majoron Dark Matter Model: LUX to keV Line
• Thermal Dark Matter From A Highly Decoupled Sector
• The minimal model of fermionic dark matter
• Dark Matter and Global Symmetries
• Probing Hidden Sector Photons through the Higgs Window
• A realistic model for Dark Matter interactions in the neutrino portal paradigm
• Dark matter decays from non-minimal coupling to gravity
• Dark Matter Stability without New Symmetries

Cited by in corpus (54)

• The Present and Future Status of Heavy Neutral Leptons
• Dark Matter Annihilation to Neutrinos
• Neutrino Portals to Dark Matter
• Baryogenesis and Dark Matter from $B$ Mesons
• Thermal Dark Matter Through the Dirac Neutrino Portal
• Dark Neutrinos and a Three Portal Connection to the Standard Model
• Indirect Detection of Neutrino Portal Dark Matter
• Probing Light Dark Matter with a Hadrophilic Scalar Mediator
• Astrophysical neutrinos flavored with Beyond the Standard Model physics
• Thermally modified sterile neutrino portal dark matter and gravitational waves from phase transition: The Freeze-in case
• The Dark Side of the Littlest Seesaw: freeze-in, the two right-handed neutrino portal and leptogenesis-friendly fimpzillas
• Collider Signals of Baryogenesis and Dark Matter from $B$ Mesons: A Roadmap to Discovery
• Interplay between neutrino and gravity portals for FIMP dark matter
• Dark Matter from Freeze-In via the Neutrino Portal
• Scrutinizing Right-Handed Neutrino Portal Dark Matter With Yukawa Effect
• Minimal Seesaw extension for Neutrino Mass and Mixing, Leptogenesis and Dark Matter: FIMPzillas through the Right-Handed Neutrino Portal
• $Z^{\prime }$ Mediated WIMPs: Dead, Dying, or Soon to be Detected?
• Dark matter direct detection of a fermionic singlet at one loop
• Search for right-handed neutrinos from dark matter annihilation with gamma-rays
• Feeble neutrino portal dark matter at neutrino detectors
• Dark Matter and the elusive ${\mathbf{Z}}^{\prime }$ in a dynamical Inverse Seesaw scenario
• Gravity-mediated Scalar Dark Matter in Warped Extra-Dimensions
• Cosmic neutrino background search experiments as decaying dark matter detectors
• A Systematic Study of Hidden Sector Dark Matter: Application to the Gamma-Ray and Antiproton Excesses
• Dark matter produced from right-handed neutrinos
• $\chi$aro$\nu$: a tool for neutrino flux generation from WIMPs
• Unraveling the Scotogenic Model at Muon Collider
• Hot Leptogenesis from Thermal Dark Matter
• Probing the sterile neutrino portal to Dark Matter with $\gamma$ rays
• Loop Dominated Signals from Neutrino Portal Dark Matter
• Heavy Neutral Leptons at the Electron-Ion Collider
• Common origin of baryon asymmetry, dark matter and neutrino mass
• Extended Analysis of Neutrino-Dark Matter Interactions with Small-Scale CMB Experiments
• FIMP Dark Matter from Leptogenesis in Fast Expanding Universe
• Strongly Interacting Neutrino Portal Dark Matter
• The Inflaton Portal to Dark Matter
• Dark Matter in the Type Ib Seesaw Model
• Dark side of the Seesaw
• Light dark matter from dark sector decay
• Constraining neutrino-DM interactions with Milky Way dwarf spheroidals and supernova neutrinos
• Time-delayed neutrino emission from supernovae as a probe of dark matter-neutrino interactions
• Inverse Seesaw and Portal Dark Matter
• Sterile Neutrino Portal Dark Matter in $\nu$THDM
• Secluded Dark Matter in Gauged $B-L$ Model
• Semi-Annihilation of Fermionic Dark Matter
• Light curves of BSM-induced neutrino echoes in the optically-thin limit
• $1\leftrightarrow 2$ Processes of a Sterile Neutrino Around Electroweak Scale in the Thermal Plasma
• Composite Dark Matter and Neutrino Masses from a Light Hidden Sector
• Collider search of light dark matter model with dark sector decay
• Structures of the Massive Vector Boson Propagators at Finite Temperature Illuminated by the Goldstone Equivalence Gauge
• Bounds on ALP-Mediated Dark Matter Models from Celestial Objects
• Scrutinizing Fermionic Dark Matter in Scotogenic Model with Low Reheating Temperature
• Sterile neutrino portals to Majorana dark matter: effective operators and UV completions
• Reviving $Z^{\prime }$ Portal Dark Matter with Conversion Mechanism