Dark radiation from dark matter produced in Z decays generates long-lived dark photons that dominate over meson decays and bremsstrahlung for small kinetic mixing and masses above the GeV scale, allowing FASER2, FACET, and MATHUSLA to probe relic-abundance-consistent regions beyond conventional dark
Isospin-Violating Dark Matter
3 Pith papers cite this work. Polarity classification is still indexing.
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abstract
Searches for dark matter scattering off nuclei are typically compared assuming that the dark matter's spin-independent couplings are identical for protons and neutrons. This assumption is neither innocuous nor well motivated. We consider isospin-violating dark matter (IVDM) with one extra parameter, the ratio of neutron to proton couplings, and include the isotope distribution for each detector. For a single choice of the coupling ratio, the DAMA and CoGeNT signals are consistent with each other and with current XENON constraints, and they unambiguously predict near future signals at XENON and CRESST. We provide a quark-level realization of IVDM as WIMPless dark matter that is consistent with all collider and low-energy bounds.
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A double right-handed U(1) gauge extension generates the Standard Model fermion mass hierarchy at tree and loop levels and stabilizes a viable scalar singlet dark matter particle consistent with relic density and direct detection bounds.
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 energy models.
citing papers explorer
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Search for Long-Lived Dark Photons from Dark Radiation at the LHC
Dark radiation from dark matter produced in Z decays generates long-lived dark photons that dominate over meson decays and bremsstrahlung for small kinetic mixing and masses above the GeV scale, allowing FASER2, FACET, and MATHUSLA to probe relic-abundance-consistent regions beyond conventional dark
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Physical implications of a double right-handed gauge symmetry
A double right-handed U(1) gauge extension generates the Standard Model fermion mass hierarchy at tree and loop levels and stabilizes a viable scalar singlet dark matter particle consistent with relic density and direct detection bounds.
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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 energy models.