Hidden Sector Dark Matter Models for the Galactic Center Gamma-Ray Excess

Abstract

The gamma-ray excess observed from the Galactic Center can be interpreted as dark matter particles annihilating into Standard Model fermions with a cross section near that expected for a thermal relic. Although many particle physics models have been shown to be able to account for this signal, the fact that this particle has not yet been observed in direct detection experiments somewhat restricts the nature of its interactions. One way to suppress the dark matter's elastic scattering cross section with nuclei is to consider models in which the dark matter is part of a hidden sector. In such models, the dark matter can annihilate into other hidden sector particles, which then decay into Standard Model fermions through a small degree of mixing with the photon, Z, or Higgs bosons. After discussing the gamma-ray signal from hidden sector dark matter in general terms, we consider two concrete realizations: a hidden photon model in which the dark matter annihilates into a pair of vector gauge bosons that decay through kinetic mixing with the photon, and a scenario within the generalized NMSSM in which the dark matter is a singlino-like neutralino that annihilates into a pair of singlet Higgs bosons, which decay through their mixing with the Higgs bosons of the MSSM.

arXiv comment11 pages, 8 figures; v2: added discussion of AMS positron constraints; v3: matches journal version

References in corpus (59)

• A Theory of Dark Matter
• The Anatomy of Electro-Weak Symmetry Breaking. II: The Higgs bosons in the Minimal Supersymmetric Model
• Secluded WIMP Dark Matter
• The Next-to-Minimal Supersymmetric Standard Model
• DarkSUSY: Computing Supersymmetric Dark Matter Properties Numerically
• Dark Matter Annihilation in The Galactic Center As Seen by the Fermi Gamma Ray Space Telescope
• PPPC 4 DM ID: A Poor Particle Physicist Cookbook for Dark Matter Indirect Detection
• Precise Relic WIMP Abundance and its Impact on Searches for Dark Matter Annihilation
• Astrophysical Signatures of Secluded Dark Matter
• On The Origin Of The Gamma Rays From The Galactic Center
• Detection of a Gamma-Ray Source in the Galactic Center Consistent with Extended Emission from Dark Matter Annihilation and Concentrated Astrophysical Emission
• Dark Matter and Pulsar Model Constraints from Galactic Center Fermi-LAT Gamma Ray Observations
• Exciting Dark Matter and the INTEGRAL/SPI 511 keV signal
• Constraining Light Dark Matter with Diffuse X-Ray and Gamma-Ray Observations
• Non-Abelian Dark Sectors and Their Collider Signatures
• LHC Signals for a SuperUnified Theory of Dark Matter
• New limits on dark matter annihilation from AMS cosmic ray positron data
• Simplified Dark Matter Models for the Galactic Center Gamma-Ray Excess
• Dark Matter through the Axion Portal
• The Consistency of Fermi-LAT Observations of the Galactic Center with a Millisecond Pulsar Population in the Central Stellar Cluster
• Relic density of dark matter in the NMSSM
• Asymmetric Dark Matter from a GeV Hidden Sector
• CoGeNT Interpretations
• Light Neutralino Dark Matter in the NMSSM
• A comment on the emission from the Galactic Center as seen by the Fermi telescope
• Dark Matter distribution in the Milky Way: microlensing and dynamical constraints
• Bounding the Higgs width at the LHC using full analytic results for gg -> 2e 2μ
• Abelian Hidden Sectors at a GeV
• Pulsars Cannot Account for the Inner Galaxy's GeV Excess
• Extended gamma-ray emission from Coy Dark Matter
• The Contribution of Cosmic Rays Interacting With Molecular Clouds to the Galactic Center Gamma-Ray Excess
• Dark Matter Signals from Cascade Annihilations
• Dark Forces and Light Dark Matter
• Dark Light Higgs
• The PAMELA Positron Excess from Annihilations into a Light Boson
• The generalised NMSSM at one loop: fine tuning and phenomenology
• High Energy Positrons and the WMAP Haze from Exciting Dark Matter
• The Morphology of Hadronic Emission Models for the Gamma-Ray Source at the Galactic Center
• Light Dark Matter from the U(1)_X Sector in the NMSSM with Gauge Mediation
• Dark Matter Sees The Light
• Phenomenological viability of neutralino dark matter in the NMSSM
• Gamma ray emission in Fermi bubbles and Higgs portal dark matter
• Direct and Indirect Singlet Scalar Dark Matter Detection in the Lepton-Specific two-Higgs-doublet Model
• Light Dark Matter and the Electroweak Phase Transition in the NMSSM
• Particle Physics Implications for CoGeNT, DAMA, and Fermi
• A Leptophobic Z' And Dark Matter From Grand Unification
• Phenomenology of Dirac Neutralino Dark Matter
• Light NMSSM Neutralino Dark Matter in the Wake of CDMS II and a 126 GeV Higgs
• Light dark matter in the NMSSM: upper bounds on direct detection cross sections
• Extended MSSM Neutralinos as the Source of the PAMELA Positron Excess
• Decaying into the Hidden Sector
• 10 GeV neutralino dark matter and light stau in the MSSM
• Dark matter annihilation through a lepton-specific Higgs boson
• Fermi Bubbles under Dark Matter Scrutiny Part II: Particle Physics Analysis
• W-WIMP Annihilation as a Source of the Fermi Bubbles
• WIMPless dark matter and the excess gamma rays from the Galactic center
• The Galactic Center Region Gamma Ray Excess from A Supersymmetric Leptophilic Higgs Model
• A Simple Recipe for the 111 and 128 GeV Lines
• Dark Sector Mass Relations from RG Focusing

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• A Tale of Tails: Dark Matter Interpretations of the Fermi GeV Excess in Light of Background Model Systematics
• A taste of dark matter: Flavour constraints on pseudoscalar mediators
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• Model-Independent Indirect Detection Constraints on Hidden Sector Dark Matter
• Dark Matter's secret liaisons: phenomenology of a dark U(1) sector with bound states
• The windows for kinetically mixed Z'-mediated dark matter and the galactic center gamma ray excess
• Galactic Center Gamma-Ray Excess from Dark Matter Annihilation: Is There A Black Hole Spike?
• Pseudoscalar Portal Dark Matter
• Challenges in Explaining the Galactic Center Gamma-Ray Excess with Millisecond Pulsars
• NMSSM Interpretation of the Galactic Center Excess
• Updated cosmic-ray and radio constraints on light dark matter: Implications for the GeV gamma-ray excess at the Galactic center
• Dark Matter Interpretation of the Fermi-LAT Observation Toward the Galactic Center
• Galactic center $\gamma$-ray excess in hidden sector DM models with dark gauge symmetries: local $Z_3$ symmetry as an example
• The Return of the Templates: Revisiting the Galactic Center Excess with Multi-Messenger Observations
• The High-Energy Tail of the Galactic Center Gamma-Ray Excess
• Towards a realistic astrophysical interpretation of the gamma-ray Galactic center excess
• A description of the Galactic Center excess in the Minimal Supersymmetric Standard Model
• Z' Mediated Dark Matter Models for the Galactic Center Gamma-Ray Excess
• Search for Gamma-ray Emission from Dark Matter Annihilation in the Large Magellanic Cloud with the Fermi Large Area Telescope
• Supersymmetric Sub-Electroweak Scale Dark Matter, the Galactic Center Gamma-ray Excess, and Exotic Decays of the 125 GeV Higgs Boson
• Towards a Supersymmetric Description of the Fermi Galactic Center Excess
• Secluded singlet fermionic dark matter driven by the Fermi gamma-ray excess
• SUSY explanation of the Fermi Galactic Center Excess and its test at LHC Run-II
• Fits to the Fermi-LAT GeV excess with RH sneutrino dark matter: implications for direct and indirect dark matter searches and the LHC
• Millisecond Pulsars, TeV Halos, and Implications For The Galactic Center Gamma-Ray Excess
• Model-independent analysis of the DAMPE excess
• Annihilation Signatures of Hidden Sector Dark Matter Within Early-Forming Microhalos
• Galactic Centre GeV Photons from Dark Technicolor
• Annihilating Asymmetric Dark Matter
• Multimediator models for the galactic center gamma ray excess
• SUSY Implications from WIMP Annihilation into Scalars at the Galactic Centre
• Breaking a dark degeneracy: The gamma-ray signature of early matter domination
• $Z^{\prime }$ Mediated WIMPs: Dead, Dying, or Soon to be Detected?
• Dark Forces in the Sky: Signals from Z' and the Dark Higgs
• The $\text{Fermi}$-LAT gamma-ray excess at the Galactic Center in the singlet-doublet fermion dark matter model
• Constraining Dark Matter Interactions with Pseudoscalar and Scalar Mediators Using Collider Searches for Multi-jets plus Missing Transverse Energy
• Les Houches Lectures on Indirect Detection of Dark Matter
• Galactic Center gamma-ray excess from two-Higgs-doublet-portal dark matter
• NMSSM explanations of the Galactic center gamma ray excess and promising LHC searches
• The Semi-Hooperon: Gamma-ray and anti-proton excesses in the Galactic Center
• Evidence of TeV Halos Around Millisecond Pulsars
• Galactic Center Gamma-Ray Excess through a Dark Shower
• $SU(2{)}_X$ Vector DM and Galactic Center Gamma-Ray Excess
• Confronting Galactic and Extragalactic $\gamma$-ray observed by Fermi-LAT with Annihilating Dark Matter in Inert Higgs Doublet Model
• On the sensitivity of CTA to gamma-ray boxes from multi-TeV dark matter
• Simplified Dark Matter Models Confront the Gamma Ray Excess
• Type-III two Higgs doublet model plus a pseudoscalar confronted with $h\to \mu \tau$, muon $g-2$ and dark matter
• Searching for Vector Dark Matter by Higgs Portal at the LHC
• Nonabelian dark matter models for 3.5 keV X-rays
• WIMPflation
• Radiative Neutrino Mass with $Z_3$ Dark matter: From Relic Density to LHC Signatures
• Galactic Center Gamma Ray Excess in a Radiative Neutrino Mass Model
• A Systematic Study of Hidden Sector Dark Matter: Application to the Gamma-Ray and Antiproton Excesses
• Confronting Galactic center and dwarf spheroidal gamma-ray observations with cascade annihilation models
• Lining up the Galactic Center Gamma-Ray Excess
• MSSM A-funnel and the Galactic Center Excess: Prospects for the LHC and Direct Detection Experiments
• Dark Matter Microhalos in the Solar Neighborhood: Pulsar Timing Signatures of Early Matter Domination
• Dark Higgs Channel for FERMI GeV $\gamma$-ray Excess
• Updated Collider and Direct Detection Constraints on Dark Matter Models for the Galactic Center Gamma-Ray Excess
• Can AMS-02 discriminate the origin of an anti-proton signal?
• Wavelet-Based Techniques for the Gamma-Ray Sky
• Tau Portal Dark Matter models at the LHC
• The Effects Of Relativistic Hidden Sector Particles on the Matter Power Spectrum
• Thermodynamic Evolution of Secluded Vector Dark Matter: Conventional WIMPs and Nonconventional WIMPs
• Interpreting the galactic center gamma-ray excess in the NMSSM
• Non-adiabatic evolution of dark sector in the presence of $U(1{)}_{L_{\mu }-L_{\tau }}$ gauge symmetry
• (In)Direct Detection of Boosted Dark Matter
• Everything You Always Wanted to Know About Dark Matter Elastic Scattering Through Higgs Loops But Were Afraid to Ask
• Indirect Detection Imprint of a CP Violating Dark Sector
• Phenomenology of Colored Radiative Neutrino Mass Model and Its Implications on the Cosmic-ray Observations
• Present and Future constraints on Secluded Dark Matter in the Galactic Halo with TeV Gamma-ray Observatories
• Quantum Simulations of Dark Sector Showers
• Search for Scalar Dark Matter via Pseudoscalar Portal Interactions: In Light of the Galactic Center Gamma-Ray Excess
• Interpretations of galactic center gamma-ray excess confronting the PandaX-II constraints on dark matter-neutron spin-dependent scatterings in the NMSSM
• The Cherenkov Telescope Array Will Test Whether Pulsars Generate the Galactic Center Gamma-Ray Excess
• A Potentially Detectable Gamma-Ray Line in the Fermi Galactic Center Excess -- In Light of One-Step Cascade Annihilations of Secluded (Vector) Dark Matter via the Higgs Portal
• Limits on Early Matter Domination from the Isotropic Gamma-Ray Background
• Flux-mediated Dark Matter
• When Freeze-out occurs due to a non-Boltzmann suppression: A study of degenerate dark sector
• Testing Dark Matter with the Anomalous Magnetic Moment in Quantum Electrodynamics Model
• Dark matter properties implied by gamma ray interstellar emission models
• Dark photon searches via Higgs boson production at the LHC and beyond
• Generalized Dirac duality and CP violation in a two photon theory
• Shedding Light on Dark Matter at the LHC with Machine Learning
• Boosting (In)direct Detection of Dark Matter