Non-abelian Dark Matter Solutions for Galactic Gamma-ray Excess and Perseus 3.5 keV X-ray Line

Abstract

We attempt to explain simultaneously the Galactic center gamma-ray excess and the 3.5 keV X-ray line from the Perseus cluster based on a class of non-abelian $SU(2)$ DM models, in which the dark matter and an excited state comprise a "dark" $SU(2)$ doublet. The non-abelian group kinetically mixes with the standard model gauge group via dimensions-5 operators. The dark matter particles annihilate into standard model fermions, followed by fragmentation and bremsstrahlung, and thus producing a continuous spectrum of gamma-rays. On the other hand, the dark matter particles can annihilate into a pair of excited states, each of which decays back into the dark matter particle and an X-ray photon, which has an energy equal to the mass difference between the dark matter and the excited state, which is set to be 3.5 keV. The large hierarchy between the required X-ray and $\gamma$-ray annihilation cross-sections can be achieved by a very small kinetic mixing between the SM and dark sector, which effectively suppresses the annihilation into the standard model fermions but not into the excited state.

arXiv commentv3: references and clarifications added, conclusions unchanged, version accepted by JCAP

References in corpus (79)

• A Universal Density Profile from Hierarchical Clustering
• Planck 2013 results. XVI. Cosmological parameters
• First results from the LUX dark matter experiment at the Sanford Underground Research Facility
• DarkSUSY: Computing Supersymmetric Dark Matter Properties Numerically
• Dark Matter Annihilation in The Galactic Center As Seen by the Fermi Gamma Ray Space Telescope
• Detection of An Unidentified Emission Line in the Stacked X-ray spectrum of Galaxy Clusters
• PPPC 4 DM ID: A Poor Particle Physicist Cookbook for Dark Matter Indirect Detection
• An unidentified line in X-ray spectra of the Andromeda galaxy and Perseus galaxy cluster
• Analytical Models For Galactic Nuclei
• Detection of a Gamma-Ray Source in the Galactic Center Consistent with Extended Emission from Dark Matter Annihilation and Concentrated Astrophysical Emission
• Background model systematics for the Fermi GeV excess
• Dark Matter and Pulsar Model Constraints from Galactic Center Fermi-LAT Gamma Ray Observations
• Astrophysical and Dark Matter Interpretations of Extended Gamma-Ray Emission from the Galactic Center
• The all-sky distribution of 511 keV electron-positron annihilation emission
• The Spectrum and Morphology of the Fermi Bubbles
• New limits on dark matter annihilation from AMS cosmic ray positron data
• Possible Evidence For Dark Matter Annihilation In The Inner Milky Way From The Fermi Gamma Ray Space Telescope
• A comment on the emission from the Galactic Center as seen by the Fermi telescope
• Dark matter annihilations and decays after the AMS-02 positron measurements
• 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
• A 3.55 keV hint for decaying axion-like particle dark matter
• Nonabelian dark matter: models and constraints
• 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
• SIMPle Dark Matter: Self-Interactions and keV Lines
• Fitting the Fermi-LAT GeV excess: On the importance of including the propagation of electrons from dark matter
• Electroweak and Dark Matter Constraints on a Z' in Models with a Hidden Valley
• X-ray line signal from 7 keV axino dark matter decay
• A simplified 2HDM with a scalar dark matter and the galactic center gamma-ray excess
• A Possible Explanation of Low Energy $\gamma$-ray Excess from Galactic Centre and Fermi Bubble by a Dark Matter Model with Two Real Scalars
• Gamma ray emission in Fermi bubbles and Higgs portal dark matter
• X-ray line signal from decaying axino warm dark matter
• 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
• Relic Gravity Waves and 7 keV Dark Matter from a GeV scale inflaton
• 3.5 keV X-rays as the "21 cm line" of dark atoms, and a link to light sterile neutrinos
• 3.55 keV photon lines from axion to photon conversion in the Milky Way and M31
• X-ray lines from R-parity violating decays of keV sparticles
• 7 keV Scalar Dark Matter and the Anomalous Galactic X-ray Spectrum
• Anomaly-free flavor models for Nambu-Goldstone bosons and the 3.5 keV X-ray line signal
• 3.5 keV x-ray line from decaying gravitino dark matter
• The impact of the phase-space density on the indirect detection of dark matter
• Sterile Neutrino Dark Matter and Low Scale Leptogenesis from a Charged Scalar
• A self-consistent phase-space distribution function for the anisotropic Dark Matter halo of the Milky Way
• 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
• A Fresh Look at keV Sterile Neutrino Dark Matter from Frozen-In Scalars
• 3.5 keV X-ray Line Signal from Decay of Right-Handed Neutrino due to Transition Magnetic Moment
• Bounds on dark matter interpretation of Fermi-LAT GeV excess
• X-ray line in Radiative Neutrino Model with Global $U(1)$ Symmetry
• Galactic Center gamma-ray excess from two-Higgs-doublet-portal dark matter
• 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
• Fermi Bubbles under Dark Matter Scrutiny Part II: Particle Physics Analysis
• Magnetic dark matter for the X-ray line at 3.55 keV
• A 3.55 keV line from $\text{DM}\to a\to \gamma$: predictions for cool-core and non-cool-core clusters
• The 3.5 keV X-ray line signal from decaying moduli with low cutoff scale
• Consistency of dark matter interpretations of the 3.5 keV X-ray line
• Nonabelian dark matter models for 3.5 keV X-rays
• Decaying Vector Dark Matter as an Explanation for the 3.5 keV Line from Galaxy Clusters
• Hidden axion dark matter decaying through mixing with QCD axion and the 3.5 keV X-ray line
• 7 keV Sterile neutrino dark matter in $U(1{)}_R-$ lepton number model
• 7 keV Dark Matter as X-ray Line Signal in Radiative Neutrino Model
• 3.5-keV X-ray line from nearly-degenerate WIMP dark matter decays
• Natural $X$-ray Lines from the Low Scale Supersymmetry Breaking
• X-ray Line from the Dark Transition Electric Dipole
• Exploring X-Ray Lines as Scotogenic Signals
• The 3.5 keV X-ray line signature from annihilating and decaying dark matter in Weinberg model
• 3.5 keV X-ray line and R-Parity Conserving Supersymmetry
• The impact of propagation uncertainties on the potential Dark Matter contribution to the Fermi LAT mid-latitude gamma-ray data
• ${\nu }_R$ dark matter-philic Higgs for 3.5 keV X-ray signal
• Extra light fermions in $E_6$-inspired models and the 3.5 keV X-ray line signal
• 3.5 keV Galactic Emission Line as a Signal from the Hidden Sector
• 3.55 keV X-ray Line Interpretation in Radiative Neutrino Model
• Identification of 3.55 KeV line in the framework of standard physics
• 7 keV sterile neutrino Dark Matter in extended seesaw framework

Cited by in corpus (16)

• Two component WIMP-FImP dark matter model with singlet fermion, scalar and pseudo scalar
• Nonthermal Two Component Dark Matter Model for Fermi-LAT $\gamma$-ray excess and 3.55 keV X-ray Line
• Model-independent analysis of the DAMPE excess
• Return of the X-rays: A New Hope for Fermionic Dark Matter at the keV Scale
• A Couplet from Flavored Dark Matter
• Confronting Galactic center and dwarf spheroidal gamma-ray observations with cascade annihilation models
• Pseudoscalar Portal Dark Matter and New Signatures of Vector-like Fermions
• Common Origin of 3.55 keV X-Ray Line and Galactic Center Gamma Ray Excess in a Radiative Neutrino Mass Model
• Dark Higgs Channel for FERMI GeV $\gamma$-ray Excess
• Common Origin of $3.55$ keV X-ray line and Gauge Coupling Unification with Left-Right Dark Matter
• Interpreting the galactic center gamma-ray excess in the NMSSM
• Interpreting the Fermi-LAT gamma ray excess in the simplified framework
• Dark sector portal with vector-like leptons and flavor sequestering
• Supersymmetric Higgs-portal and X-ray lines
• The Dark Penguin Shines Light at Colliders
• Dark matter properties implied by gamma ray interstellar emission models