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Impact of the cosmic neutrino background on long-range force searches
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abstract
Light bosons can mediate long-range forces. We show that light bosonic mediators interacting with a background medium, in particular, with the cosmic neutrino background (C$\nu$B), may induce medium-dependent masses which could effectively screen long-range forces from detection. This leads to profound implications for long-range force searches in e.g. the E\"ot-Wash, MICROSCOPE, and lunar laser-ranging (LLR) experiments. For instance, we find that when the coupling of the mediator to neutrinos is above $3\times10^{-10}$ or $5\times10^{-13}$, bounds from LLR and experiments employing the Sun as an attractor, respectively, would be entirely eliminated. Larger values of the coupling can also substantially alleviate bounds from searches conducted at shorter distances.
Forward citations
Cited by 2 Pith papers
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Probing Long-Range Forces Between Neutrinos with Cosmic Structures
Neutrino long-range forces stronger than gravity would make the cosmic neutrino background collapse into bound states, and existing matter power spectrum and reionization data now exclude a band of couplings for force...
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Testing the Fifth Force on Lepton Spins through Neutrino Oscillations
Neutrino oscillation data from solar, reactor, accelerator, and atmospheric experiments place new limits on a vector fifth force coupled to lepton spins and exclude it as an explanation of the muon g-2 anomaly.
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