Majorana neutrinos convert to antineutrinos in ultralight vector dark matter backgrounds coupled to lepton number, enabling supernova neutrino detectors to probe gauge couplings as small as 10^{-32} for masses around 10^{-22} to 10^{-14} eV.
Signatures of ultralight dark mat- ter in neutrino oscillation experiments
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DUNE can set competitive bounds on refractive neutrino masses via supernova time-of-flight, with sensitivity significantly enhanced by galactic dark matter density spikes.
Ultralight scalar dark matter amplifies the lepton-flavor-violating muon-to-positron conversion rate via an effective Majorana mass m_μe, yielding new constraints on flavor-off-diagonal neutrino couplings from SINDRUM II, COMET, and Mu2e bounds.
Nelson-Barr mechanism yields ultralight scalar dark matter inducing time-periodic variation in CKM matrix elements, distinguishable from QCD axion and detectable via nuclear clocks.
Self-interaction bounds from cosmology constrain ultralight dark matter couplings to neutrinos, electrons, and light quarks via unavoidable quantum loop corrections.
Systematic study of scalar and vector ULDM interactions on long-baseline neutrino oscillations finds order-of-magnitude weaker constraints for m_φ ≲ 10^{-17} eV due to stochastic effects, with combined T2K+NOvA data showing no alleviation of δ_CP discrepancy.
citing papers explorer
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Neutrino-Antineutrino Conversion from Ultralight Vector Dark Matter
Majorana neutrinos convert to antineutrinos in ultralight vector dark matter backgrounds coupled to lepton number, enabling supernova neutrino detectors to probe gauge couplings as small as 10^{-32} for masses around 10^{-22} to 10^{-14} eV.
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Shedding light on dark matter spikes through refractive neutrino masses
DUNE can set competitive bounds on refractive neutrino masses via supernova time-of-flight, with sensitivity significantly enhanced by galactic dark matter density spikes.
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Amplifying muon-to-positron conversion in nuclei with ultralight dark matter
Ultralight scalar dark matter amplifies the lepton-flavor-violating muon-to-positron conversion rate via an effective Majorana mass m_μe, yielding new constraints on flavor-off-diagonal neutrino couplings from SINDRUM II, COMET, and Mu2e bounds.
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Nelson-Barr ultralight dark matter
Nelson-Barr mechanism yields ultralight scalar dark matter inducing time-periodic variation in CKM matrix elements, distinguishable from QCD axion and detectable via nuclear clocks.
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Self-Interaction Bounds on Ultralight Dark Matter Couplings to Matter
Self-interaction bounds from cosmology constrain ultralight dark matter couplings to neutrinos, electrons, and light quarks via unavoidable quantum loop corrections.
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Ultralight dark matter in long-baseline accelerator neutrino oscillations
Systematic study of scalar and vector ULDM interactions on long-baseline neutrino oscillations finds order-of-magnitude weaker constraints for m_φ ≲ 10^{-17} eV due to stochastic effects, with combined T2K+NOvA data showing no alleviation of δ_CP discrepancy.