Gamma Lines from Majorana Dark Matter

Abstract

We discuss simple models which predict the existence of significant gamma-ray fluxes from dark matter annihilation. In this context the dark matter candidate is a Majorana fermion with velocity-suppressed tree-level annihilation into Standard Model fermions but unsuppressed annihilation into photons. These gamma lines can easily be distinguished from the continuum and provide a possibility to test these models.

6 pages, 4 figures, version to appear in PRD

References in corpus (13)

• Package-X: A Mathematica package for the analytic calculation of one-loop integrals
• Updated Search for Spectral Lines from Galactic Dark Matter Interactions with Pass 8 Data from the Fermi Large Area Telescope
• Significant Gamma Lines from Inert Higgs Dark Matter
• Search for photon line-like signatures from Dark Matter annihilations with H.E.S.S
• Gamma Ray Signals from Dark Matter: Concepts, Status and Prospects
• Characterising dark matter searches at colliders and direct detection experiments: Vector mediators
• Theory for Baryon Number and Dark Matter at the LHC
• Gamma-rays from Heavy Minimal Dark Matter
• Simplified Dirac Dark Matter Models and Gamma-Ray Lines
• Scalar Singlet Dark Matter and Gamma Lines
• Leptobaryons as Majorana Dark Matter
• GAMMA-400 gamma-ray observatory
• Monochromatic Gamma Rays from Dark Matter Annihilation to Leptons

Cited by in corpus (18)

• Review of LHC Dark Matter Searches
• Cosmological Implications of Dark Matter Bound States
• Hunting the dark Higgs
• Collider Searches for Dark Matter through the Higgs Lens
• On Anomaly-Free Dark Matter Models
• The Dark Sequential Z' Portal: Collider and Direct Detection Experiments
• WIMPs Without Weakness: Generalized Mass Window with Entropy Injection
• General calculation of the cross section for dark matter annihilations into two photons
• Indirect dark-matter detection with MadDM v3.2 -- Lines and Loops
• Majorana Dark matter with B+L gauge symmetry
• $Z_3$ Scalar Dark Matter with Strong Positron Fluxes
• Gamma Lines from the Hidden Sector
• Multilepton dark matter signals
• Dark matter as the source of neutrino mass: theory overview and experimental prospects
• UV completion of an axial, leptophobic, $Z^{\prime }$
• Gamma Lines and Dark Matter from Anomaly Cancellation
• Simplified Dark Matter Models
• Constraining self-interacting ultrahigh-energy muon neutrinos by cosmic microwave background spectral distortion