Exploring X-Ray Lines as Scotogenic Signals

Abstract

We consider some implications of X-ray lines from certain astronomical objects as potential effects of dark matter decay in the context of the scotogenic model, where neutrinos acquire mass radiatively via one-loop interactions with dark matter. As an example, we focus on the 3.5 keV line recently detected in the X-ray spectra of galaxy clusters, assuming that it stands future scrutiny. We explore the scenario in which the line originates from the slow decay of fermionic dark matter in the model. After obtaining a number of benchmark points representing the parameter space consistent with the new data and various other constraints, we make predictions on several observables in leptonic processes. They include the effective Majorana mass in neutrinoless double-beta decay, the sum of neutrino masses, and the rate of flavor-changing decay mu -> e gamma, as well as the cross sections of e+e- collisions into final states containing nonstandard particles in the model. These are testable in ongoing or future experiments and thus offer means to probe the scotogenic scenario studied.

12 pages, no figures, slightly revised, references added, main conclusions unchanged, journal version

References in corpus (49)

• Supersymmetric Dark Matter
• Big-Bang Nucleosynthesis
• First results from the LUX dark matter experiment at the Sanford Underground Research Facility
• Verifiable Radiative Seesaw Mechanism of Neutrino Mass and Dark Matter
• Detection of An Unidentified Emission Line in the Stacked X-ray spectrum of Galaxy Clusters
• Neutralino Relic Density including Coannihilations
• Complete Tenth-Order QED Contribution to the Muon g-2
• Results on neutrinoless double beta decay of 76Ge from GERDA Phase I
• Status of three-neutrino oscillation parameters, circa 2013
• Search for Majorana neutrinos with the first two years of EXO-200 data
• Limit on Neutrinoless ββ Decay of Xe-136 from the First Phase of KamLAND-Zen and Comparison with the Positive Claim in Ge-76
• Constraints on Cosmology from the Cosmic Microwave Background Power Spectrum of the 2500 ${\mathrm{deg}}^2$ SPT-SZ Survey
• Lepton Flavor Violation in the Scotogenic Model
• Cold Dark Matter, Radiative Neutrino Mass, mu to e gamma, and Neutrinoless Double Beta Decay
• Neutrinoless double beta decay and neutrino physics
• The Poker Face of the Majoron Dark Matter Model: LUX to keV Line
• Resonantly-Produced 7 keV Sterile Neutrino Dark Matter Models and the Properties of Milky Way Satellites
• The Quest for an Intermediate-Scale Accidental Axion and Further ALPs
• Direct Detection of Leptophilic Dark Matter in a Model with Radiative Neutrino Masses
• A 3.55 keV hint for decaying axion-like particle dark matter
• Reconciliation of CDM abundance and $\mu \to e\gamma$ in a radiative seesaw model
• Radiative seesaw: Warm dark matter, collider and lepton flavour violating signals
• The 7 keV axion dark matter and the X-ray line signal
• A 3.55 keV Photon Line and its Morphology from a 3.55 keV ALP Line
• Neutrino Mass, Muon Anomalous Magnetic Moment, and Lepton Flavor Nonconservation
• X-ray line signal from decaying axino warm dark matter
• Running of Radiative Neutrino Masses: The Scotogenic Model
• 7 keV sterile neutrino dark matter from split flavor mechanism
• Generating X-ray lines from annihilating dark matter
• X-ray Lines from Dark Matter: The Good, The Bad, and The Unlikely
• Search for Neutrinoless Double-Beta Decay of ${}^{100}$Mo with the NEMO-3 Detector
• Pseudo-Dirac Dark Matter Leaves a Trace
• X-ray lines from R-parity violating decays of keV sparticles
• Radiative Scaling Neutrino Mass and Warm Dark Matter
• 3.5 keV x-ray line from decaying gravitino dark matter
• Axino dark matter in light of an anomalous X-ray line
• Signatures of Extra Dimensional Sterile Neutrinos
• keV Photon Emission from Light Nonthermal Dark Matter
• Inert-Sterile Neutrino: Cold or Warm Dark Matter Candidate
• 3.55 keV X-ray Line Signal from Excited Dark Matter in Radiative Neutrino Model
• A Dynamical Framework for KeV Dirac Neutrino Warm Dark Matter
• Probing Scotogenic Effects in Higgs Boson Decays
• 3.5-keV X-ray line from nearly-degenerate WIMP dark matter decays
• Can a millicharged dark matter particle emit an observable gamma-ray line?
• X-ray Line from the Dark Transition Electric Dipole
• Probing Scotogenic Effects in e+e- Colliders
• Extra light fermions in $E_6$-inspired models and the 3.5 keV X-ray line signal
• Radiative Scaling Neutrino Mass with $A_4$ Symmetry
• Leptonic CP Violation and Leptogenesis

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• From the trees to the forest: a review of radiative neutrino mass models
• A Fresh Look at keV Sterile Neutrino Dark Matter from Frozen-In Scalars
• Shining Light on the Scotogenic Model: Interplay of Colliders and Cosmology
• Lepton Flavor Violation in the singlet-triplet scotogenic model
• Systematic U(1)_{B-L} Extensions of Loop-Induced Neutrino Mass Models with Dark Matter
• Non-abelian Dark Matter Solutions for Galactic Gamma-ray Excess and Perseus 3.5 keV X-ray Line
• Displaced Vertices from X-ray Lines
• Explaining the 3.5 keV X-ray Line in a $L_{\mu }-L_{\tau }$ Extension of the Inert Doublet Model
• Primordial black holes and scotogenic dark matter
• Structure formation in a mixed dark matter model with decaying sterile neutrino: the 3.5 keV X-ray line and the Galactic substructure
• Radiative Neutrino Mass in Alternative Left-Right Model
• Predictive Scotogenic Model with Flavor Dependent Symmetry
• Parametrization of the Yukawa matrix in the scotogenic model and single-zero textures of the neutrino mass matrix
• X-ray lines and self-interacting dark matter
• 3.5 keV X-ray Line Signal from Dark Matter Decay in Local $U(1{)}_{B-L}$ Extension of Zee-Babu Model
• New emission line at ~3.5 keV - observational status, connection with radiatively decaying dark matter and directions for future studies
• Phenomenology of the Hidden SU(2) Vector Dark Matter Model
• Constraining scotogenic dark matter and primordial black holes using gravitational waves
• Primordial black holes and lepton flavor violation with scotogenic dark matter