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Constraints on dark matter with future MeV gamma-ray telescopes

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arxiv 2411.00087 v3 pith:F5NGPASN submitted 2024-10-31 hep-ph astro-ph.HE

Kayla E. O'Donnell , Tracy R. Slatyer This is my paper · ORCID
classification hep-phastro-ph.HE
keywords darkmattergammainstrumentssensitivityabilityannihilatingannihilation
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

A number of new balloon or space-based $\gamma$-ray observatories have been proposed to close a "MeV gap" in sensitivity to $\gamma$ rays in the MeV-GeV energy band. One aspect of the science case for these instruments is their ability to constrain or discover decaying or annihilating dark matter. In this work, we forecast the sensitivity of these instruments for dark matter annihilation or decay for a range of possible Standard Model final states and compare to existing bounds.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Probing the Phenomenology of Dark Matter from Decoupled Freeze-Out

    hep-ph 2025-11 conditional novelty 6.0 of 10

    In a scalar-plus-pseudoscalar mediator model, decoupled freeze-out can produce the observed dark matter relic density via s-wave annihilation while evading CMB limits, though indirect-detection and BBN bounds leave on...

  2. Neutrino lines and photon continua from cascade dark matter decay

    hep-ph 2026-07 conditional novelty 5.0 of 10

    In cascade dark-matter decay, neutrino-line searches can beat gamma-ray limits whenever the intermediate mediator is long-lived enough to suppress the photon flux.

  3. Semi-visible higgs decay as a probe for new invisible particles

    hep-ph 2025-11 conditional novelty 5.0 of 10

    At the HL-LHC, semi-visible Higgs decays can probe dark-SMEFT couplings to invisible scalars or fermions below 50 GeV, with the best reach for Yukawa-type operators, while invisible Z decays and unitarity constrain de...

  4. Electromagnetic Dirac Cogenesis

    hep-ph 2025-07 conditional novelty 5.0 of 10

    A single out-of-equilibrium decay chain of heavy vector-like fermions via electromagnetic dipole operators can simultaneously generate the baryon asymmetry and an asymmetric dark matter relic with mass around 1.9 prot...

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