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Inelastic Dark Matter
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Many observations suggest that much of the matter of the universe is non-baryonic. Recently, the DAMA NaI dark matter direct detection experiment reported an annual modulation in their event rate consistent with a WIMP relic. However, the Cryogenic Dark Matter Search (CDMS) Ge experiment excludes most of the region preferred by DAMA. We demonstrate that if the dark matter can only scatter by making a transition to a slightly heavier state (Delta m ~ 100kev), the experiments are no longer in conflict. Moreover, differences in the energy spectrum of nuclear recoil events could distinguish such a scenario from the standard WIMP scenario. Finally, we discuss the sneutrino as a candidate for inelastic dark matter in supersymmetric theories.
Forward citations
Cited by 26 Pith papers
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Reconstructing Dark Matter Mass and Discriminating Standard and Non-Standard WIMP-Nucleus Interactions with Paleo-Detectors
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Heavy-element paleodetectors for Higgsino dark matter
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Dark Astronomy with Dark Matter Detectors
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Probing large mass-splitting inelastic Dark Matter with RES-NOVA
A 32.4 g·d PbWO4 cryogenic detector reports the first direct limits on inelastic dark matter at mass splittings up to ~510 keV (SHM) and ~780 keV (LMC).
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Steep Redshift Evolution of the Ionizing Escape Fraction at $z = 5$--$12$: Empirical Constraints and Comparison with Simulations
Empirical three-parameter fit to f_esc(M_h,z) yields steep redshift evolution with population-averaged escape fraction rising from ~2% at z=5 to ~9% at z=12.
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Minimal Freeze-in Dark Matter: Reviving electroweak doublet dark matter with Boltzmann suppressed freeze-in
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Scalar-Mediated Inelastic Dark Matter as a Solution to Small-Scale Structure Anomalies
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Dark Matter implications from the LZ, PandaX-4T and XENONnT Data
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Coscattering Dark Matter in the Inverse Scotogenic Models
In the inverse scotogenic model, nearly degenerate Z2-odd scalars φ1 and φ2 produce the observed dark matter relic density via coscattering through either the Higgs portal or Yukawa portal, with long-lived φ2 decays g...
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Exploring Fermionic Dark Matter in the Presence of Scalar Leptoquarks
A vector-like lepton dark matter model with two inert scalar leptoquarks produces a radiative pseudo-Dirac mass splitting that evades direct detection and opens up parameter space for the correct relic density.
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Numerical evolution of self-gravitating halos of self-interacting dark matter
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`Dark' Matter Effect as a Novel Solution to the KM3-230213A Puzzle
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Noble Dark Matter: Surprising Elusiveness of Dark Baryons
Dark baryons made of SU(2)_L multiplet dark quarks are predicted to be dominated by an SU(2)_L singlet state above TeV masses, which strongly suppresses interactions with the Standard Model.
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Boosted Dark Matter from Sagittarius A$^\star$
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Probing Inelastic Dark Matter via Cosmic-Ray Upscattering in NGC 1068
Constraints on sub-GeV inelastic dark matter are derived from cosmic-ray cooling in NGC 1068 by including elastic and deep inelastic scattering in a vector-portal model.
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Dark QCD Origin of the NANOGrav Signal and Self-Interacting Dark Matter
A dark QCD model with a first-order phase transition at 5-6 MeV produces the NANOGrav SGWB amplitude while supplying self-interacting dark matter via a 40 GeV baryon and 20-50 MeV dilaton, linked by entropy dilution.
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Nearly Degenerate Majorana Dark Matter and Its Self-Interactions in a Gauged $U(1)_{L_\mu - L_\tau}$ Model
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Letter of Intent: The Forward Physics Facility
Proposes construction of the Forward Physics Facility at the HL-LHC with four complementary detectors to exploit forward neutrinos and new-particle fluxes for neutrino, QCD, astroparticle, and dark-matter measurements.
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Singlet-doublet dark matter revisited
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A two-component model with an inert scalar doublet and a pseudo-Dirac fermion doublet can match Planck relic density and direct and indirect limits in sub-TeV mass regions, and a type-II seesaw triplet can also genera...
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Dark Matter Energy Deposition and Production from the Table-Top to the Cosmos
The thesis presents a new 3-to-2 freezeout mechanism, bound-state effects on searches, a new axion interferometric search, reionization assessments, 21-cm constraints, and the DarkHistory code for ionization and therm...
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Dark Photon mediated Inelastic Dark Matter in Cosmology, Astrophysics and Colliders
Full relic-density-allowed parameter space of dark-photon inelastic dark matter is mapped at α_D=α_EM, with FASER sensitive up to Mχ1≈7 GeV and neutron-star heating up to ~2000 K.
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Reviving $Z^\prime$ Portal Dark Matter with Conversion Mechanism
In a U(1)_{B-L} Z' portal model with two nearly degenerate dark fermions, the conversion mechanism can produce the observed dark matter relic density while evading current collider and direct-detection constraints.
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Gamma-Rays and Gravitational Waves from Inelastic Higgs Portal Dark Matter
An inelastic complex-scalar Higgs portal dark matter model can evade direct detection, explain the Galactic Center gamma-ray excess, and produce a first-order electroweak phase transition with a gravitational wave sig...
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Cosmological searches for the neutrino mass scale and mass ordering
Thesis summarizing an upper limit of 0.12 eV on the neutrino mass sum, bias calibration via CMB lensing cross-correlations, and tighter limits plus stronger normal-ordering preference in non-phantom dynamical dark ene...
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CODEX-b: Opening New Windows to the Long-Lived Particle Frontier at the LHC
CODEX-b is a proposed 10-meter cube near LHCb for catching long-lived new particles, and this ESPP paper presents optimized cheaper designs, cost and timeline estimates, and the CODEX-β demonstrator already installed ...
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