Dark matter annihilation into leptons through gravity portals

Abstract

Dark matter (DM) constitutes 85% of the matter in the Universe. However, its specific particle property is still unclear. The fundamentals of DM particles subject to gravitational interaction, and that the lepton excess in cosmic rays may originate from DM particles, inspired us to investigate DM particle properties beyond the standard model. We assume that a leptophilic SU(2) doublet exists in nature as the mediator connecting DM with visible leptons. Since general relativity is not renormalizable at the quantum level, it should be regarded as an effective field theory's leading order term. One species of the next-to-leading-order term should be operators linear to the Ricci scalar and containing scalar fields, such as the Higgs field, scalar DM, or the newly introduced SU(2) scalar doublet. These operators can cause DM annihilation through gravity portals. We analyzed constraints from the cosmic antiproton flux, DM relic abundance, cosmic positron flux, cosmic microwave background, and direct detection experiments. The result shows that there is a vast parameter space that is compatible with current experiments. DM with a mass of electroweak scale is only allowed to annihilate into leptons. We further show that the purely gravitational DM better explains the DArk Matter Particle Explorer cosmic lepton excess. Our work provides a promising mechanism for DM particles to connect with standard model particles.

References in corpus (55)

• A Universal Density Profile from Hierarchical Clustering
• The Structure of Cold Dark Matter Halos
• A Theory of Dark Matter
• General relativity as an effective field theory: The leading quantum corrections
• PPPC 4 DM ID: A Poor Particle Physicist Cookbook for Dark Matter Indirect Detection
• Concentration, Spin and Shape of Dark Matter Haloes as a Function of the Cosmological Model: WMAP1, WMAP3 and WMAP5 results
• Astrophysical Signatures of Secluded Dark Matter
• Direct detection of a break in the teraelectronvolt cosmic-ray spectrum of electrons and positrons
• Model-independent implications of the e+, e-, anti-proton cosmic ray spectra on properties of Dark Matter
• Indirect Dark Matter Signatures in the Cosmic Dark Ages I. Generalizing the Bound on s-wave Dark Matter Annihilation from Planck
• CMB Constraints on WIMP Annihilation: Energy Absorption During the Recombination Epoch
• Constraining Light Dark Matter with Diffuse X-Ray and Gamma-Ray Observations
• New Positron Spectral Features from Supersymmetric Dark Matter - a Way to Explain the PAMELA Data?
• Leptophilic Dark Matter
• Dark Matter Interpretations of the Electron/Positron Excesses after FERMI
• PAMELA Positron Excess as a Signal from the Hidden Sector
• The effective field theory treatment of quantum gravity
• Dark Matter and Pulsar Origins of the Rising Cosmic Ray Positron Fraction in Light of New Data From AMS
• A Robust Excess in the Cosmic-Ray Antiproton Spectrum: Implications for Annihilating Dark Matter
• The Case for a 700+ GeV WIMP: Cosmic Ray Spectra from PAMELA, Fermi and ATIC
• High Energy Positrons From Annihilating Dark Matter
• An Effective Theory of Dirac Dark Matter
• Scrutinizing the evidence for dark matter in cosmic-ray antiprotons
• AMS-02 antiprotons, at last! Secondary astrophysical component and immediate implications for Dark Matter
• Constraints on dark matter annihilation from AMS-02 results
• Bounds on the Nonminimal Coupling of the Higgs Boson to Gravity
• Higgs Gravitational Interaction, Weak Boson Scattering, and Higgs Inflation in Jordan and Einstein Frames
• Neutrino Mass and Dark Matter in light of recent AMS-02 results
• Lightish but clumpy: scalar dark matter from inflationary fluctuations
• Gravitational Interaction of Higgs Boson and Weak Boson Scattering
• Dynamical Dark Matter and the Positron Excess in Light of AMS
• ATIC, PAMELA, HESS, Fermi and nearby Dark Matter subhalos
• The Heavy Photon Search experiment at Jefferson Laboratory
• From inflation to cosmological electroweak phase transition with a complex scalar singlet
• Scalar dark matter, Type II Seesaw and the DAMPE cosmic ray $e^{+}+e^{-}$ excess
• Constraints on Dark Matter Annihilation/Decay from the Isotropic Gamma-Ray Background
• Scale-invariant scalar field dark matter through the Higgs portal
• Explaining the DAMPE data with scalar dark matter and gauged $U(1{)}_{L_e-L_{\mu }}$ interaction
• Scalar dark matter interpretation of the DAMPE data with U(1) gauge interactions
• Constraints on dark matter annihilations from diffuse gamma-ray emission in the Galaxy
• Flavor Structure of the Cosmic-Ray Electron/Positron Excesses at DAMPE
• Dark matter decays from non-minimal coupling to gravity
• Slightly Non-Minimal Dark Matter in PAMELA and ATIC
• Dark matter decay through gravity portals
• Cosmic ray $e^{+}{e}^{-}$ spectrum excess and peak feature observed by the DAMPE experiment from dark matter
• DAMPE Electron-Positron Excess in Leptophilic $Z^{\prime }$ model
• DAMPE excess from decaying right-handed neutrino dark matter
• Investigating the detection of dark matter subhalos as extended sources with Fermi-LAT
• Higgs inflation and cosmological electroweak phase transition with N scalars in the post-Higgs era
• Probing Gravitational Dark Matter
• Two-mediator dark matter models and cosmic electron excess
• Probing Flavor Structure of Cosmic Ray $e^{\mp }$ Spectrum and Implications for Dark Matter Indirect Searches
• Constraining Dark Matter and Ultra-High Energy Cosmic Ray Sources with Fermi-LAT Diffuse Gamma Ray Background
• Cosmoparticle physics of dark matter
• Observational constraints on dark matter decaying via gravity portals

Cited by in corpus (5)

• Non-minimally Coupled Vector Boson Dark Matter
• Utilizing cosmic-ray positron and electron observations to probe the averaged properties of Milky Way pulsars
• Revisiting GeV-scale annihilating dark matter with the AMS-02 positron fraction
• Observing Signals of Spectral Features in the Cosmic-Ray Positrons and Electrons from Milky Way Pulsars
• Possible counterpart signal of the Fermi bubbles at the cosmic-ray positrons