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Distortion of neutrino oscillations by dark photon dark matter
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abstract
A weakly coupled and light dark photon coupling to lepton charges $L_\mu-L_\tau$ is an intriguing dark matter candidate whose coherent oscillations alter the dispersion relations of leptons. We study how this effect modifies the dynamics of neutrino flavor conversions, focusing on long baseline and solar oscillations. We analyze data from the T2K, SNO, and Super-Kamiokande experiments in order to obtain world-leading limits on the dark photon gauge coupling for masses below $\sim 10^{-11}\,\mathrm{eV}$. Degeneracies between shifts in the neutrino mass-squared differences and mixing angles and the new physics effect significantly relax the current constrains on the neutrino vacuum oscillation parameters.
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Cited by 1 Pith paper
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Probing long-range $L_e-L_\mu$ forces with supernova neutronization burst neutrinos
DUNE can use a nearby supernova neutronization burst to constrain ultralight Le−Lμ gauge forces via distortions of the electron-neutrino survival probability.
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